郑州地铁5号线14名遇难者名单


深入贯彻落实习近平总书记在深入推进东北振兴座谈会重要讲话和我省考察时重要指示精神    以新气象新担当新作为推进现代化牡丹江建设  沿着习近平总书记指引方向奋力前行   开辟振兴发展的新境界   坚持新发展理念 解放思想 锐意进取 深化改革 破解矛盾 以新气象新担当新作为推进现代化牡丹江建设  坚定信心不动摇 敢于担当有作为 撸起袖子加油干   汇聚智慧力量 携手推动现代化牡丹江建设   统筹推进“五位一体”总体布局,协调推进“四个全面”战略布局,推进新时代牡丹江振兴发展  
【习题】期(qi)中测试
阅读次数(shu):949    发布时(shi)间:2019年11月29日(ri)    
物理(li)试题(ti)(ti)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)、单(dan)项选(xuan)(xuan)(xuan)(xuan)择题(ti)(ti)(每(mei)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)题(ti)(ti)只(zhi)有(you)(you)(you)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)个(ge)(ge)(ge)正(zheng)(zheng)(zheng)确(que)(que)(que)选(xuan)(xuan)(xuan)(xuan)项,本(ben)(ben)题(ti)(ti)共(gong)9小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)题(ti)(ti),每(mei)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)题(ti)(ti)4分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen),共(gong)计(ji)(ji)(ji)(ji)(ji)(ji) 36分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen))1.某(mou)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)在(zai)(zai)直(zhi)(zhi)(zhi)角坐标(biao)(biao)系(xi)中(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)线(xian)(xian)(xian)(xian)(xian)(xian)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen)布(bu)情况(kuang)如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi),O、P、M、N为(wei)(wei)(wei)(wei)(wei)(wei)(wei)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)中(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)四个(ge)(ge)(ge)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),其中(zhong)(zhong)(zhong)(zhong)(zhong)P和(he)(he)M在(zai)(zai)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)条(tiao)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)线(xian)(xian)(xian)(xian)(xian)(xian)上(shang)(shang),则下列(lie)说(shuo)(shuo)法(fa)(fa)(fa)(fa)(fa)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)( )A.M点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)场(chang)(chang)(chang)强(qiang)(qiang)(qiang)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)于(yu)(yu)N点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)场(chang)(chang)(chang)强(qiang)(qiang)(qiang) B.M点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)高(gao)(gao)(gao)于(yu)(yu)N点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)C.将(jiang)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)负电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)山O点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)移到(dao)(dao)(dao)(dao)M点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)能(neng)(neng)(neng)(neng)增(zeng)加(jia)(jia)(jia)(jia)(jia)D.将(jiang)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)正(zheng)(zheng)(zheng)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)由(you)(you)(you)P点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)无初速(su)(su)(su)释(shi)放(fang)(fang),仅在(zai)(zai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)力(li)(li)(li)作用(yong)下,可(ke)(ke)(ke)(ke)沿PM电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)线(xian)(xian)(xian)(xian)(xian)(xian)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)到(dao)(dao)(dao)(dao)M点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)2.宇航员的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)训练、竞技体(ti)(ti)育的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)指(zhi)导(dao)(dao)(dao)、汽(qi)车的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)设计(ji)(ji)(ji)(ji)(ji)(ji)等多种工(gong)作都用(yong)到(dao)(dao)(dao)(dao)急(ji)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)度(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)概念。加(jia)(jia)(jia)(jia)(jia)速(su)(su)(su)度(du)(du)(du)(du)(du)对(dui)时(shi)(shi)(shi)(shi)(shi)(shi)间(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)化率(lv)(lv)(lv)称为(wei)(wei)(wei)(wei)(wei)(wei)(wei)急(ji)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)度(du)(du)(du)(du)(du),其方(fang)(fang)向(xiang)(xiang)与(yu)(yu)加(jia)(jia)(jia)(jia)(jia)速(su)(su)(su)度(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)化方(fang)(fang)向(xiang)(xiang)相(xiang)(xiang)同(tong)(tong)。一(yi)(yi)(yi)(yi)(yi)(yi)(yi)质(zhi)(zhi)(zhi)(zhi)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)从(cong)(cong)(cong)(cong)(cong)静(jing)(jing)止开(kai)始做(zuo)(zuo)(zuo)直(zhi)(zhi)(zhi)线(xian)(xian)(xian)(xian)(xian)(xian)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong),其加(jia)(jia)(jia)(jia)(jia)速(su)(su)(su)度(du)(du)(du)(du)(du)随时(shi)(shi)(shi)(shi)(shi)(shi)间(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)化关(guan)系(xi)如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)。下列(lie)说(shuo)(shuo)法(fa)(fa)(fa)(fa)(fa)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)( )A.t=3s时(shi)(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)急(ji)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)度(du)(du)(du)(du)(du)和(he)(he)t=5s时(shi)(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)急(ji)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)度(du)(du)(du)(du)(du)等大(da)(da)(da)(da)(da)(da)(da)(da)反向(xiang)(xiang)B.2s~4s内(nei)(nei)(nei)(nei)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)质(zhi)(zhi)(zhi)(zhi)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)做(zuo)(zuo)(zuo)减(jian)速(su)(su)(su)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong) C.t=6s时(shi)(shi)(shi)(shi)(shi)(shi)质(zhi)(zhi)(zhi)(zhi)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)速(su)(su)(su)度(du)(du)(du)(du)(du)大(da)(da)(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)等于(yu)(yu)7m/sD.0~6s内(nei)(nei)(nei)(nei)质(zhi)(zhi)(zhi)(zhi)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)速(su)(su)(su)度(du)(du)(du)(du)(du)方(fang)(fang)向(xiang)(xiang)不(bu)(bu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)3. 关(guan)于(yu)(yu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)势(shi)(shi)(shi)(shi)(shi)(shi)和(he)(he)磁(ci)感(gan)应(ying)强(qiang)(qiang)(qiang)度(du)(du)(du)(du)(du).,列(lie)说(shuo)(shuo)法(fa)(fa)(fa)(fa)(fa)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)( )A.电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)两(liang)(liang)(liang)(liang)极(ji)(ji)(ji)(ji)(ji)间(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)等于(yu)(yu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)势(shi)(shi)(shi)(shi)(shi)(shi) B.电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)势(shi)(shi)(shi)(shi)(shi)(shi)越(yue)大(da)(da)(da)(da)(da)(da)(da)(da)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan),将(jiang)其他形(xing)式(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)能(neng)(neng)(neng)(neng)转(zhuan)(zhuan)化为(wei)(wei)(wei)(wei)(wei)(wei)(wei)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)(neng)就越(yue)多C.由(you)(you)(you) 可(ke)(ke)(ke)(ke)知(zhi)(zhi),某(mou)处(chu)(chu)(chu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)磁(ci)感(gan)应(ying)强(qiang)(qiang)(qiang)度(du)(du)(du)(du)(du)大(da)(da)(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)与(yu)(yu)放(fang)(fang)入(ru)(ru)该处(chu)(chu)(chu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)通(tong)(tong)(tong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)导(dao)(dao)(dao)线(xian)(xian)(xian)(xian)(xian)(xian)所(suo)(suo)受(shou)磁(ci)场(chang)(chang)(chang)力(li)(li)(li)F成(cheng)正(zheng)(zheng)(zheng)比(bi)(bi)(bi)(bi),与(yu)(yu)IL成(cheng)反比(bi)(bi)(bi)(bi)D.小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)磁(ci)针N极(ji)(ji)(ji)(ji)(ji)所(suo)(suo)受(shou)磁(ci)场(chang)(chang)(chang)力(li)(li)(li)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)向(xiang)(xiang)就是(shi)(shi)(shi)(shi)该处(chu)(chu)(chu)磁(ci)感(gan)应(ying)强(qiang)(qiang)(qiang)度(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)向(xiang)(xiang) 4.如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi),平(ping)(ping)行板(ban)(ban)(ban)(ban)(ban)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)(qi)带(dai)(dai)(dai)有(you)(you)(you)等量(liang)(liang)(liang)(liang)(liang)异种电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he),与(yu)(yu)静(jing)(jing)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)计(ji)(ji)(ji)(ji)(ji)(ji)相(xiang)(xiang)连,静(jing)(jing)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)计(ji)(ji)(ji)(ji)(ji)(ji)金(jin)(jin)属(shu)(shu)(shu)外(wai)壳和(he)(he)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)(qi)下极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)都接(jie)(jie)(jie)(jie)(jie)地,在(zai)(zai)两(liang)(liang)(liang)(liang)极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)间(jian)(jian)(jian)有(you)(you)(you)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)个(ge)(ge)(ge)固定(ding)(ding)(ding)(ding)(ding)(ding)在(zai)(zai)P点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he),以(yi)E表(biao)(biao)(biao)示(shi)(shi)(shi)(shi)(shi)两(liang)(liang)(liang)(liang)板(ban)(ban)(ban)(ban)(ban)间(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)强(qiang)(qiang)(qiang)度(du)(du)(du)(du)(du),表(biao)(biao)(biao)示(shi)(shi)(shi)(shi)(shi)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)在(zai)(zai)P点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)能(neng)(neng)(neng)(neng),表(biao)(biao)(biao)示(shi)(shi)(shi)(shi)(shi)静(jing)(jing)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)计(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)偏(pian)(pian)(pian)角,若(ruo)保(bao)持下极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)不(bu)(bu)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong),将(jiang)上(shang)(shang)极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)向(xiang)(xiang)下移动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)段距离(li)至(zhi)图(tu)(tu)(tu)(tu)中(zhong)(zhong)(zhong)(zhong)(zhong)虚线(xian)(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)置(zhi),则( )A.减(jian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao),E不(bu)(bu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)B.增(zeng)大(da)(da)(da)(da)(da)(da)(da)(da),E增(zeng)大(da)(da)(da)(da)(da)(da)(da)(da)C.减(jian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao),增(zeng)大(da)(da)(da)(da)(da)(da)(da)(da)D.增(zeng)大(da)(da)(da)(da)(da)(da)(da)(da),不(bu)(bu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)5.某(mou)卫(wei)星在(zai)(zai)半(ban)(ban)径(jing)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)r的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)轨(gui)(gui)(gui)道(dao)(dao)1上(shang)(shang)做(zuo)(zuo)(zuo)圆(yuan)周(zhou)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong),动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)能(neng)(neng)(neng)(neng)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)Ek,变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)轨(gui)(gui)(gui)到(dao)(dao)(dao)(dao)轨(gui)(gui)(gui)道(dao)(dao)2上(shang)(shang)后(hou)(hou)(hou)(hou)(hou),动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)能(neng)(neng)(neng)(neng)比(bi)(bi)(bi)(bi)在(zai)(zai)轨(gui)(gui)(gui)道(dao)(dao)1上(shang)(shang)减(jian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)了ΔE,在(zai)(zai)轨(gui)(gui)(gui)道(dao)(dao)2上(shang)(shang)也(ye)做(zuo)(zuo)(zuo)圆(yuan)周(zhou)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong),则轨(gui)(gui)(gui)道(dao)(dao)2的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)半(ban)(ban)径(jing)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)( )ZXXK]A. B. C. D. 6. 如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu),有(you)(you)(you)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)匀(yun)强(qiang)(qiang)(qiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)向(xiang)(xiang)平(ping)(ping)行于(yu)(yu)xOy平(ping)(ping)面(mian),平(ping)(ping)面(mian)内(nei)(nei)(nei)(nei)a、b、c三点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)位(wei)(wei)(wei)置(zhi)如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi),a、b、c三点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen)别为(wei)(wei)(wei)(wei)(wei)(wei)(wei):4V、8V、10V,下列(lie)说(shuo)(shuo)法(fa)(fa)(fa)(fa)(fa)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)( )A.坐标(biao)(biao)原(yuan)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)O的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)7VB. 若(ruo)将(jiang)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)负电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)从(cong)(cong)(cong)(cong)(cong)a点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)移动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)到(dao)(dao)(dao)(dao)c点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)力(li)(li)(li)做(zuo)(zuo)(zuo)负功C.正(zheng)(zheng)(zheng)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)在(zai)(zai)O点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)能(neng)(neng)(neng)(neng)可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)于(yu)(yu)负电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)在(zai)(zai)O点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)能(neng)(neng)(neng)(neng)D. 电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)强(qiang)(qiang)(qiang)度(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)(da)(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)200V/m7.在(zai)(zai)如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)(zhong)(zhong)(zhong)(zhong),开(kai)关(guan)S闭合(he)后(hou)(hou)(hou)(hou)(hou)和(he)(he)闭合(he)前相(xiang)(xiang)比(bi)(bi)(bi)(bi),三个(ge)(ge)(ge)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)化情况(kuang)是(shi)(shi)(shi)(shi)( )A.V示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)大(da)(da)(da)(da)(da)(da)(da)(da),A1示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)大(da)(da)(da)(da)(da)(da)(da)(da),A2示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao) B.V示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)大(da)(da)(da)(da)(da)(da)(da)(da),A1示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao),A2示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)大(da)(da)(da)(da)(da)(da)(da)(da)C.V示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao),A1示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)大(da)(da)(da)(da)(da)(da)(da)(da),A2示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao) D.V示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao),A1示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao),A2示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)大(da)(da)(da)(da)(da)(da)(da)(da)8.如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)示(shi)(shi)(shi)(shi)(shi)波管由(you)(you)(you)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)枪、竖直(zhi)(zhi)(zhi)偏(pian)(pian)(pian)转(zhuan)(zhuan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)极(ji)(ji)(ji)(ji)(ji)YY'、水平(ping)(ping)偏(pian)(pian)(pian)转(zhuan)(zhuan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)极(ji)(ji)(ji)(ji)(ji)XX'和(he)(he)荧(ying)(ying)光屏(ping)(ping)组(zu)成(cheng),当(dang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)极(ji)(ji)(ji)(ji)(ji)YY'和(he)(he)XX'所(suo)(suo)加(jia)(jia)(jia)(jia)(jia)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)都为(wei)(wei)(wei)(wei)(wei)(wei)(wei)零时(shi)(shi)(shi)(shi)(shi)(shi),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)枪射(she)(she)出(chu)(chu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)恰(qia)好打在(zai)(zai)荧(ying)(ying)光屏(ping)(ping)上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)中(zhong)(zhong)(zhong)(zhong)(zhong)心点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)即原(yuan)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)O上(shang)(shang),下列(lie)说(shuo)(shuo)法(fa)(fa)(fa)(fa)(fa)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)( )A.当(dang)上(shang)(shang)极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)Y的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)高(gao)(gao)(gao)于(yu)(yu)Y',而后(hou)(hou)(hou)(hou)(hou)极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)X的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)低(di)于(yu)(yu)X'时(shi)(shi)(shi)(shi)(shi)(shi),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)将(jiang)打在(zai)(zai)第(di)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)象限B.电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)从(cong)(cong)(cong)(cong)(cong)发射(she)(she)到(dao)(dao)(dao)(dao)打到(dao)(dao)(dao)(dao)荧(ying)(ying)光屏(ping)(ping)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)时(shi)(shi)(shi)(shi)(shi)(shi)间(jian)(jian)(jian)与(yu)(yu)偏(pian)(pian)(pian)转(zhuan)(zhuan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)极(ji)(ji)(ji)(ji)(ji)所(suo)(suo)加(jia)(jia)(jia)(jia)(jia)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)大(da)(da)(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)有(you)(you)(you)关(guan)C.电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)打到(dao)(dao)(dao)(dao)荧(ying)(ying)光屏(ping)(ping)时(shi)(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)能(neng)(neng)(neng)(neng)与(yu)(yu)偏(pian)(pian)(pian)转(zhuan)(zhuan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)极(ji)(ji)(ji)(ji)(ji)所(suo)(suo)加(jia)(jia)(jia)(jia)(jia)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)大(da)(da)(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)有(you)(you)(you)关(guan)D.电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)通(tong)(tong)(tong)过(guo)XX' 时(shi)(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)水平(ping)(ping)偏(pian)(pian)(pian)转(zhuan)(zhuan)量(liang)(liang)(liang)(liang)(liang)与(yu)(yu)YY' 所(suo)(suo)加(jia)(jia)(jia)(jia)(jia)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)大(da)(da)(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)有(you)(you)(you)关(guan)9.如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)伏(fu)安(an)法(fa)(fa)(fa)(fa)(fa)测电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)(zhong)(zhong)(zhong)(zhong),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)表(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)3kΩ,读数(shu)(shu)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)3V;电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)表(biao)(biao)(biao)内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)10Ω,读数(shu)(shu)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)4mA。待测电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)R的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)真实值(zhi)等于(yu)(yu)( )A.750Ω B.760Ω C.1000Ω D.1010Ω二、多项选(xuan)(xuan)(xuan)(xuan)择题(ti)(ti)(每(mei)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)题(ti)(ti)至(zhi)少(shao)有(you)(you)(you)两(liang)(liang)(liang)(liang)个(ge)(ge)(ge)正(zheng)(zheng)(zheng)确(que)(que)(que)选(xuan)(xuan)(xuan)(xuan)项,本(ben)(ben)题(ti)(ti)共(gong)5小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)题(ti)(ti),每(mei)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)题(ti)(ti)4分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen),选(xuan)(xuan)(xuan)(xuan)对(dui)但(dan)不(bu)(bu)全(quan)得(de)2分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen),选(xuan)(xuan)(xuan)(xuan)错(cuo)0分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen),共(gong)计(ji)(ji)(ji)(ji)(ji)(ji)20分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen))10. 下列(lie)说(shuo)(shuo)法(fa)(fa)(fa)(fa)(fa)中(zhong)(zhong)(zhong)(zhong)(zhong)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)( )A.从(cong)(cong)(cong)(cong)(cong)关(guan)系(xi)式(shi)可(ke)(ke)(ke)(ke)知(zhi)(zhi),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)势(shi)(shi)(shi)(shi)(shi)(shi)由(you)(you)(you)通(tong)(tong)(tong)过(guo)它的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)I和(he)(he)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)总(zong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)共(gong)同(tong)(tong)决定(ding)(ding)(ding)(ding)(ding)(ding)B.从(cong)(cong)(cong)(cong)(cong)关(guan)系(xi)式(shi)可(ke)(ke)(ke)(ke)知(zhi)(zhi),导(dao)(dao)(dao)体(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)跟(gen)导(dao)(dao)(dao)体(ti)(ti)两(liang)(liang)(liang)(liang)端(duan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)成(cheng)正(zheng)(zheng)(zheng)比(bi)(bi)(bi)(bi),跟(gen)导(dao)(dao)(dao)体(ti)(ti)中(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)成(cheng)反比(bi)(bi)(bi)(bi)C.从(cong)(cong)(cong)(cong)(cong)关(guan)系(xi)式(shi)可(ke)(ke)(ke)(ke)知(zhi)(zhi),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)跟(gen)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)势(shi)(shi)(shi)(shi)(shi)(shi)成(cheng)正(zheng)(zheng)(zheng)比(bi)(bi)(bi)(bi),跟(gen)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)总(zong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)成(cheng)反比(bi)(bi)(bi)(bi)D.从(cong)(cong)(cong)(cong)(cong)关(guan)系(xi)式(shi)可(ke)(ke)(ke)(ke)知(zhi)(zhi),对(dui)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)个(ge)(ge)(ge)确(que)(que)(que)定(ding)(ding)(ding)(ding)(ding)(ding)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)导(dao)(dao)(dao)体(ti)(ti)来说(shuo)(shuo),所(suo)(suo)加(jia)(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)跟(gen)通(tong)(tong)(tong)过(guo)导(dao)(dao)(dao)体(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)比(bi)(bi)(bi)(bi)值(zhi)是(shi)(shi)(shi)(shi)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)定(ding)(ding)(ding)(ding)(ding)(ding)值(zhi)11.空间(jian)(jian)(jian)存在(zai)(zai)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)静(jing)(jing)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang),一(yi)(yi)(yi)(yi)(yi)(yi)(yi)沿x轴的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)线(xian)(xian)(xian)(xian)(xian)(xian)上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)随x的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)化如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi)。个(ge)(ge)(ge)质(zhi)(zhi)(zhi)(zhi)量(liang)(liang)(liang)(liang)(liang)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)m、电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)量(liang)(liang)(liang)(liang)(liang)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)q的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)带(dai)(dai)(dai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)粒(li)(li)(li)(li)子(zi)仅在(zai)(zai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)力(li)(li)(li)作用(yong)下,从(cong)(cong)(cong)(cong)(cong)坐标(biao)(biao)原(yuan)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)0由(you)(you)(you)静(jing)(jing)止始沿x轴做(zuo)(zuo)(zuo)直(zhi)(zhi)(zhi)线(xian)(xian)(xian)(xian)(xian)(xian)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)。则带(dai)(dai)(dai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)粒(li)(li)(li)(li)子(zi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)加(jia)(jia)(jia)(jia)(jia)速(su)(su)(su)度(du)(du)(du)(du)(du)a、速(su)(su)(su)度(du)(du)(du)(du)(du)v、动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)能(neng)(neng)(neng)(neng)Ek、电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)势(shi)(shi)(shi)(shi)(shi)(shi)能(neng)(neng)(neng)(neng)Ep与(yu)(yu)x关(guan)系(xi)图(tu)(tu)(tu)(tu)像中(zhong)(zhong)(zhong)(zhong)(zhong)可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)( )A. B.C. D.12.某(mou)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)路(lu)(lu)(lu)端(duan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)与(yu)(yu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)关(guan)系(xi)和(he)(he)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)R1、R2的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)与(yu)(yu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)关(guan)系(xi)如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)用(yong)此(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)和(he)(he)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)R1、R2组(zu)成(cheng)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu),R1、R2可(ke)(ke)(ke)(ke)以(yi)同(tong)(tong)时(shi)(shi)(shi)(shi)(shi)(shi)接(jie)(jie)(jie)(jie)(jie)入(ru)(ru)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu),也(ye)可(ke)(ke)(ke)(ke)以(yi)单(dan)独(du)接(jie)(jie)(jie)(jie)(jie)入(ru)(ru)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)所(suo)(suo)有(you)(you)(you)可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)各种接(jie)(jie)(jie)(jie)(jie)法(fa)(fa)(fa)(fa)(fa)中(zhong)(zhong)(zhong)(zhong)(zhong),下列(lie)说(shuo)(shuo)法(fa)(fa)(fa)(fa)(fa)中(zhong)(zhong)(zhong)(zhong)(zhong)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi) (    ) A. 将(jiang)R1、R2并联后(hou)(hou)(hou)(hou)(hou)接(jie)(jie)(jie)(jie)(jie)到(dao)(dao)(dao)(dao)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)两(liang)(liang)(liang)(liang)端(duan),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)输出(chu)(chu)功率(lv)(lv)(lv)最(zui)(zui)大(da)(da)(da)(da)(da)(da)(da)(da),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)效率(lv)(lv)(lv)最(zui)(zui)低(di)B. 将(jiang)R1单(dan)独(du)接(jie)(jie)(jie)(jie)(jie)到(dao)(dao)(dao)(dao)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)两(liang)(liang)(liang)(liang)端(duan),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)输出(chu)(chu)功率(lv)(lv)(lv)最(zui)(zui)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)效率(lv)(lv)(lv)最(zui)(zui)高(gao)(gao)(gao)C. 将(jiang)R1、R2串联后(hou)(hou)(hou)(hou)(hou)接(jie)(jie)(jie)(jie)(jie)到(dao)(dao)(dao)(dao)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)两(liang)(liang)(liang)(liang)端(duan),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)输出(chu)(chu)功率(lv)(lv)(lv)最(zui)(zui)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)效率(lv)(lv)(lv)最(zui)(zui)高(gao)(gao)(gao)D. 将(jiang)R2单(dan)独(du)接(jie)(jie)(jie)(jie)(jie)到(dao)(dao)(dao)(dao)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)两(liang)(liang)(liang)(liang)端(duan),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)输出(chu)(chu)功率(lv)(lv)(lv)最(zui)(zui)大(da)(da)(da)(da)(da)(da)(da)(da),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)效率(lv)(lv)(lv)最(zui)(zui)低(di)13. 多用(yong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)测未知(zhi)(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)值(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)甲(jia)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)势(shi)(shi)(shi)(shi)(shi)(shi)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)E、内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)r,R0为(wei)(wei)(wei)(wei)(wei)(wei)(wei)调零电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu),Rg为(wei)(wei)(wei)(wei)(wei)(wei)(wei)表(biao)(biao)(biao)头内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)(zhong)(zhong)(zhong)(zhong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)I与(yu)(yu)待测电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)值(zhi)Rx关(guan)系(xi)图(tu)(tu)(tu)(tu)象如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)乙所(suo)(suo)示(shi)(shi)(shi)(shi)(shi),根(gen)据图(tu)(tu)(tu)(tu)乙中(zhong)(zhong)(zhong)(zhong)(zhong)I-Rx图(tu)(tu)(tu)(tu)线(xian)(xian)(xian)(xian)(xian)(xian)做(zuo)(zuo)(zuo)出(chu)(chu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)解释(shi)或判断中(zhong)(zhong)(zhong)(zhong)(zhong)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)( )A.用(yong)欧(ou)姆表(biao)(biao)(biao)测电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)时(shi)(shi)(shi)(shi)(shi)(shi),指(zhi)针指(zhi)示(shi)(shi)(shi)(shi)(shi)读数(shu)(shu)越(yue)大(da)(da)(da)(da)(da)(da)(da)(da),测量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)误差越(yue)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)B.欧(ou)姆表(biao)(biao)(biao)调零的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)实质(zhi)(zhi)(zhi)(zhi)是(shi)(shi)(shi)(shi)通(tong)(tong)(tong)过(guo)调节R0使(shi)Rx=0时(shi)(shi)(shi)(shi)(shi)(shi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)I=IgC.Rx越(yue)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao),相(xiang)(xiang)同(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)化量(liang)(liang)(liang)(liang)(liang)对(dui)应(ying)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)化量(liang)(liang)(liang)(liang)(liang)越(yue)大(da)(da)(da)(da)(da)(da)(da)(da),所(suo)(suo)以(yi)欧(ou)姆表(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)左(zuo)密(mi)右(you)疏D.测量(liang)(liang)(liang)(liang)(liang)中(zhong)(zhong)(zhong)(zhong)(zhong),当(dang)Rx阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)值(zhi)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)图(tu)(tu)(tu)(tu)丙中(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)R2时(shi)(shi)(shi)(shi)(shi)(shi),指(zhi)针位(wei)(wei)(wei)于(yu)(yu)表(biao)(biao)(biao)盘中(zhong)(zhong)(zhong)(zhong)(zhong)央位(wei)(wei)(wei)置(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)左(zuo)侧(ce)14. 如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi),MNQP为(wei)(wei)(wei)(wei)(wei)(wei)(wei)有(you)(you)(you)界的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)竖直(zhi)(zhi)(zhi)向(xiang)(xiang)下的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)匀(yun)强(qiang)(qiang)(qiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)强(qiang)(qiang)(qiang)度(du)(du)(du)(du)(du)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)E,ACB为(wei)(wei)(wei)(wei)(wei)(wei)(wei)固定(ding)(ding)(ding)(ding)(ding)(ding)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)光滑半(ban)(ban)圆(yuan)形(xing)轨(gui)(gui)(gui)道(dao)(dao),轨(gui)(gui)(gui)道(dao)(dao)半(ban)(ban)径(jing)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)R,A、B为(wei)(wei)(wei)(wei)(wei)(wei)(wei)轨(gui)(gui)(gui)道(dao)(dao)水平(ping)(ping)直(zhi)(zhi)(zhi)径(jing)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)两(liang)(liang)(liang)(liang)个(ge)(ge)(ge)端(duan)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian).一(yi)(yi)(yi)(yi)(yi)(yi)(yi)个(ge)(ge)(ge)质(zhi)(zhi)(zhi)(zhi)量(liang)(liang)(liang)(liang)(liang)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)m、电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)量(liang)(liang)(liang)(liang)(liang)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)-q的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)带(dai)(dai)(dai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)从(cong)(cong)(cong)(cong)(cong)A点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)正(zheng)(zheng)(zheng)上(shang)(shang)方(fang)(fang)高(gao)(gao)(gao)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)H处(chu)(chu)(chu)由(you)(you)(you)静(jing)(jing)止释(shi)放(fang)(fang),并从(cong)(cong)(cong)(cong)(cong)A点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)沿切线(xian)(xian)(xian)(xian)(xian)(xian)进入(ru)(ru)半(ban)(ban)圆(yuan)形(xing)轨(gui)(gui)(gui)道(dao)(dao).不(bu)(bu)计(ji)(ji)(ji)(ji)(ji)(ji)空气阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)力(li)(li)(li)及(ji)(ji)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)切能(neng)(neng)(neng)(neng)量(liang)(liang)(liang)(liang)(liang)损失(shi),关(guan)于(yu)(yu)带(dai)(dai)(dai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)情况(kuang),下列(lie)说(shuo)(shuo)法(fa)(fa)(fa)(fa)(fa)正(zheng)(zheng)(zheng)确(que)(que)(que)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi) (   )A.小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)定(ding)(ding)(ding)(ding)(ding)(ding)能(neng)(neng)(neng)(neng)从(cong)(cong)(cong)(cong)(cong)B点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)离(li)开(kai)轨(gui)(gui)(gui)道(dao)(dao) B.小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)在(zai)(zai)AC部(bu)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen)可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)做(zuo)(zuo)(zuo)匀(yun)速(su)(su)(su)圆(yuan)周(zhou)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)C.小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)到(dao)(dao)(dao)(dao)达C点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)速(su)(su)(su)度(du)(du)(du)(du)(du)可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)零 D.当(dang)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)从(cong)(cong)(cong)(cong)(cong)B点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)离(li)开(kai)时(shi)(shi)(shi)(shi)(shi)(shi),上(shang)(shang)升的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)高(gao)(gao)(gao)度(du)(du)(du)(du)(du)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)定(ding)(ding)(ding)(ding)(ding)(ding)等于(yu)(yu)H三、实验(yan)题(ti)(ti)(每(mei)空2分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen),共(gong)12分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen))15. (4分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen))(1)用(yong)游标(biao)(biao)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)20分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen)度(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)卡尺测量(liang)(liang)(liang)(liang)(liang)其长(zhang)度(du)(du)(du)(du)(du)如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)1,由(you)(you)(you)图(tu)(tu)(tu)(tu)可(ke)(ke)(ke)(ke)知(zhi)(zhi)其长(zhang)度(du)(du)(du)(du)(du)为(wei)(wei)(wei)(wei)(wei)(wei)(wei) mm.(2)用(yong)螺(luo)旋测微器(qi)(qi)测量(liang)(liang)(liang)(liang)(liang)其直(zhi)(zhi)(zhi)径(jing)如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)2,由(you)(you)(you)图(tu)(tu)(tu)(tu)可(ke)(ke)(ke)(ke)知(zhi)(zhi)其直(zhi)(zhi)(zhi)径(jing)为(wei)(wei)(wei)(wei)(wei)(wei)(wei) mm.16.(8分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen)) 某(mou)物理(li)实验(yan)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)组(zu)利(li)用(yong)实验(yan)室提(ti)供(gong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)器(qi)(qi)材(cai)测定(ding)(ding)(ding)(ding)(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)表(biao)(biao)(biao)V1的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu),可(ke)(ke)(ke)(ke)选(xuan)(xuan)(xuan)(xuan)用(yong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)器(qi)(qi)材(cai)如(ru)(ru)(ru)(ru)(ru)(ru)下:A.待测电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)表(biao)(biao)(biao)V1:量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)3V,内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)约(yue)3kΩ B.电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)表(biao)(biao)(biao)V2:量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)15V,内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)约(yue)20 kΩ C.电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)表(biao)(biao)(biao)A:量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)3A,内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)约(yue)0.1Ω D.定(ding)(ding)(ding)(ding)(ding)(ding)值(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)R0:9.0kΩE.滑动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)器(qi)(qi)R1:0~200Ω F.滑动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)器(qi)(qi)R2:0~2kΩG.电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)E:电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)势(shi)(shi)(shi)(shi)(shi)(shi)约(yue)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)12V,内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)忽略(lve)不(bu)(bu)计(ji)(ji)(ji)(ji)(ji)(ji)H.开(kai)关(guan)、导(dao)(dao)(dao)线(xian)(xian)(xian)(xian)(xian)(xian)若(ruo)干⑴为(wei)(wei)(wei)(wei)(wei)(wei)(wei)了准确(que)(que)(que)测量(liang)(liang)(liang)(liang)(liang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)表(biao)(biao)(biao)V1的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu),两(liang)(liang)(liang)(liang)位(wei)(wei)(wei)同(tong)(tong)学根(gen)据上(shang)(shang)述实验(yan)器(qi)(qi)材(cai)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen)别设计(ji)(ji)(ji)(ji)(ji)(ji)了如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)甲(jia)和(he)(he)乙两(liang)(liang)(liang)(liang)个(ge)(ge)(ge)测量(liang)(liang)(liang)(liang)(liang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu),你认(ren)为(wei)(wei)(wei)(wei)(wei)(wei)(wei) (选(xuan)(xuan)(xuan)(xuan)填(tian)(tian)“甲(jia)”或“乙”)更合(he)理(li),并在(zai)(zai)实物图(tu)(tu)(tu)(tu)中(zhong)(zhong)(zhong)(zhong)(zhong)用(yong)笔画线(xian)(xian)(xian)(xian)(xian)(xian)代替导(dao)(dao)(dao)线(xian)(xian)(xian)(xian)(xian)(xian)将(jiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)图(tu)(tu)(tu)(tu)补充(chong)完整. ⑵该实验(yan)中(zhong)(zhong)(zhong)(zhong)(zhong)滑动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)器(qi)(qi)应(ying)该选(xuan)(xuan)(xuan)(xuan)用(yong) (选(xuan)(xuan)(xuan)(xuan)填(tian)(tian)“R1”或“R2”).⑶用(yong)已知(zhi)(zhi)量(liang)(liang)(liang)(liang)(liang)R0和(he)(he)V1、V2的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)示(shi)(shi)(shi)(shi)(shi)数(shu)(shu)U1、U2来表(biao)(biao)(biao)示(shi)(shi)(shi)(shi)(shi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)表(biao)(biao)(biao)V1的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)RV1= .四.计(ji)(ji)(ji)(ji)(ji)(ji)算(suan)题(ti)(ti)(共(gong)计(ji)(ji)(ji)(ji)(ji)(ji)32分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen),要有(you)(you)(you)必要的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)文字(zi)说(shuo)(shuo)明和(he)(he)解题(ti)(ti)步骤,有(you)(you)(you)数(shu)(shu)值(zhi)计(ji)(ji)(ji)(ji)(ji)(ji)算(suan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)要注(zhu)明单(dan)位(wei)(wei)(wei))17. (7分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen))长(zhang)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)L的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)平(ping)(ping)行金(jin)(jin)属(shu)(shu)(shu)板(ban)(ban)(ban)(ban)(ban)水平(ping)(ping)放(fang)(fang)置(zhi),两(liang)(liang)(liang)(liang)极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)带(dai)(dai)(dai)等量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)异种电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he),板(ban)(ban)(ban)(ban)(ban)间(jian)(jian)(jian)形(xing)成(cheng)匀(yun)强(qiang)(qiang)(qiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang),一(yi)(yi)(yi)(yi)(yi)(yi)(yi)个(ge)(ge)(ge)带(dai)(dai)(dai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)量(liang)(liang)(liang)(liang)(liang)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)+q、质(zhi)(zhi)(zhi)(zhi)量(liang)(liang)(liang)(liang)(liang)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)m的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)带(dai)(dai)(dai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)粒(li)(li)(li)(li)子(zi),以(yi)初速(su)(su)(su)度(du)(du)(du)(du)(du)v0紧贴上(shang)(shang)极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)垂(chui)(chui)直(zhi)(zhi)(zhi)于(yu)(yu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)线(xian)(xian)(xian)(xian)(xian)(xian)方(fang)(fang)向(xiang)(xiang)进入(ru)(ru)该电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang),刚好从(cong)(cong)(cong)(cong)(cong)下极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)边缘射(she)(she)出(chu)(chu),射(she)(she)出(chu)(chu)时(shi)(shi)(shi)(shi)(shi)(shi)速(su)(su)(su)度(du)(du)(du)(du)(du)恰(qia)与(yu)(yu)下极(ji)(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)(ban)成(cheng)30°角,如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi),不(bu)(bu)计(ji)(ji)(ji)(ji)(ji)(ji)粒(li)(li)(li)(li)子(zi)重力(li)(li)(li),求:(1)粒(li)(li)(li)(li)子(zi)末速(su)(su)(su)度(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)(da)(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao);(2)匀(yun)强(qiang)(qiang)(qiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)场(chang)(chang)(chang)强(qiang)(qiang)(qiang)。18.(8分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen)) 如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)(zhong)(zhong)(zhong)(zhong),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)势(shi)(shi)(shi)(shi)(shi)(shi)E=3.0V,内(nei)(nei)(nei)(nei)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)r=1.0Ω;电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)R1=10Ω,R2=10Ω,R3=30Ω,R4=35Ω;电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容C=100μF。电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)(qi)原(yuan)来不(bu)(bu)带(dai)(dai)(dai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),接(jie)(jie)(jie)(jie)(jie)通(tong)(tong)(tong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)键K。电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)稳定(ding)(ding)(ding)(ding)(ding)(ding)后(hou)(hou)(hou)(hou)(hou),求:(1)流(liu)(liu)过(guo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu);(2)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)(zu)R3两(liang)(liang)(liang)(liang)端(duan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya);(3)从(cong)(cong)(cong)(cong)(cong)接(jie)(jie)(jie)(jie)(jie)通(tong)(tong)(tong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)键K至(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)达到(dao)(dao)(dao)(dao)稳定(ding)(ding)(ding)(ding)(ding)(ding)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)过(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)(zhong)流(liu)(liu)过(guo)R4的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)总(zong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)量(liang)(liang)(liang)(liang)(liang)。19.(17分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen))如(ru)(ru)(ru)(ru)(ru)(ru)图(tu)(tu)(tu)(tu)所(suo)(suo)示(shi)(shi)(shi)(shi)(shi),A、B是(shi)(shi)(shi)(shi)两(liang)(liang)(liang)(liang)块竖直(zhi)(zhi)(zhi)放(fang)(fang)置(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)平(ping)(ping)行金(jin)(jin)属(shu)(shu)(shu)板(ban)(ban)(ban)(ban)(ban),相(xiang)(xiang)距为(wei)(wei)(wei)(wei)(wei)(wei)(wei)2L,分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen)别带(dai)(dai)(dai)有(you)(you)(you)等量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)正(zheng)(zheng)(zheng)、负电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he),在(zai)(zai)两(liang)(liang)(liang)(liang)板(ban)(ban)(ban)(ban)(ban)间(jian)(jian)(jian)形(xing)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)强(qiang)(qiang)(qiang)度(du)(du)(du)(du)(du)大(da)(da)(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)E匀(yun)强(qiang)(qiang)(qiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)。A板(ban)(ban)(ban)(ban)(ban)上(shang)(shang)有(you)(you)(you)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)孔(kong)(它的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)存在(zai)(zai)对(dui)两(liang)(liang)(liang)(liang)板(ban)(ban)(ban)(ban)(ban)间(jian)(jian)(jian)匀(yun)强(qiang)(qiang)(qiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)(chang)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen)布(bu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)影响(xiang)可(ke)(ke)(ke)(ke)忽略(lve)不(bu)(bu)计(ji)(ji)(ji)(ji)(ji)(ji)),孔(kong)中(zhong)(zhong)(zhong)(zhong)(zhong)有(you)(you)(you)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)条(tiao)与(yu)(yu)板(ban)(ban)(ban)(ban)(ban)垂(chui)(chui)直(zhi)(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)水平(ping)(ping)光滑绝缘轨(gui)(gui)(gui)道(dao)(dao),一(yi)(yi)(yi)(yi)(yi)(yi)(yi)个(ge)(ge)(ge)质(zhi)(zhi)(zhi)(zhi)量(liang)(liang)(liang)(liang)(liang)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)m,电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)(liang)(liang)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)q(q>0)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)(可(ke)(ke)(ke)(ke)视(shi)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)质(zhi)(zhi)(zhi)(zhi)点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)),在(zai)(zai)外(wai)力(li)(li)(li)作用(yong)下静(jing)(jing)止在(zai)(zai)轨(gui)(gui)(gui)道(dao)(dao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)中(zhong)(zhong)(zhong)(zhong)(zhong)P处(chu)(chu)(chu)。一(yi)(yi)(yi)(yi)(yi)(yi)(yi)自然长(zhang)度(du)(du)(du)(du)(du)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)L的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)轻弹(dan)(dan)簧(huang)左(zuo)端(duan)固定(ding)(ding)(ding)(ding)(ding)(ding)在(zai)(zai)距A板(ban)(ban)(ban)(ban)(ban)左(zuo)侧(ce)L处(chu)(chu)(chu)挡板(ban)(ban)(ban)(ban)(ban)上(shang)(shang),右(you)端(duan)定(ding)(ding)(ding)(ding)(ding)(ding)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)块轻小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)绝缘材(cai)料制成(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)薄(bo)板(ban)(ban)(ban)(ban)(ban)Q。撤去外(wai)力(li)(li)(li)释(shi)放(fang)(fang)带(dai)(dai)(dai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu),它将(jiang)在(zai)(zai)场(chang)(chang)(chang)力(li)(li)(li)作用(yong)下由(you)(you)(you)静(jing)(jing)止开(kai)始向(xiang)(xiang)左(zuo)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong),穿过(guo)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)孔(kong)后(hou)(hou)(hou)(hou)(hou)(不(bu)(bu)与(yu)(yu)金(jin)(jin)属(shu)(shu)(shu)板(ban)(ban)(ban)(ban)(ban)A接(jie)(jie)(jie)(jie)(jie)触)与(yu)(yu)板(ban)(ban)(ban)(ban)(ban)Q一(yi)(yi)(yi)(yi)(yi)(yi)(yi)起压(ya)(ya)缩弹(dan)(dan)簧(huang),由(you)(you)(you)于(yu)(yu)薄(bo)板(ban)(ban)(ban)(ban)(ban)Q及(ji)(ji)弹(dan)(dan)簧(huang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)质(zhi)(zhi)(zhi)(zhi)量(liang)(liang)(liang)(liang)(liang)都可(ke)(ke)(ke)(ke)以(yi)忽略(lve)不(bu)(bu)计(ji)(ji)(ji)(ji)(ji)(ji),可(ke)(ke)(ke)(ke)认(ren)为(wei)(wei)(wei)(wei)(wei)(wei)(wei)球(qiu)(qiu)(qiu)与(yu)(yu)Q接(jie)(jie)(jie)(jie)(jie)触过(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)(zhong)不(bu)(bu)损失(shi)机械能(neng)(neng)(neng)(neng)。小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)从(cong)(cong)(cong)(cong)(cong)接(jie)(jie)(jie)(jie)(jie)触Q开(kai)始,经历(li)时(shi)(shi)(shi)(shi)(shi)(shi)间(jian)(jian)(jian),第(di)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)次(ci)(ci)把弹(dan)(dan)簧(huang)压(ya)(ya)缩至(zhi)最(zui)(zui)短(duan)。然后(hou)(hou)(hou)(hou)(hou)又被弹(dan)(dan)簧(huang)弹(dan)(dan)回(hui),由(you)(you)(you)于(yu)(yu)薄(bo)板(ban)(ban)(ban)(ban)(ban)Q的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)绝缘性能(neng)(neng)(neng)(neng)有(you)(you)(you)所(suo)(suo)欠缺(que),使(shi)得(de)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)每(mei)次(ci)(ci)离(li)开(kai)弹(dan)(dan)簧(huang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)瞬(shun)间(jian)(jian)(jian),小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)量(liang)(liang)(liang)(liang)(liang)都损失(shi)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)部(bu)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)(fen),而变(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)成(cheng)该次(ci)(ci)刚与(yu)(yu)弹(dan)(dan)簧(huang)接(jie)(jie)(jie)(jie)(jie)触时(shi)(shi)(shi)(shi)(shi)(shi)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(k大(da)(da)(da)(da)(da)(da)(da)(da)于(yu)(yu)1) 求 :(1)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)第(di)一(yi)(yi)(yi)(yi)(yi)(yi)(yi)次(ci)(ci)接(jie)(jie)(jie)(jie)(jie)触Q时(shi)(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)速(su)(su)(su)度(du)(du)(du)(du)(du)大(da)(da)(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao);(2)假设小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)被第(di)n次(ci)(ci)弹(dan)(dan)回(hui)后(hou)(hou)(hou)(hou)(hou)向(xiang)(xiang)右(you)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)最(zui)(zui)远处(chu)(chu)(chu)没(mei)有(you)(you)(you)到(dao)(dao)(dao)(dao)B板(ban)(ban)(ban)(ban)(ban),试导(dao)(dao)(dao)出(chu)(chu)小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)从(cong)(cong)(cong)(cong)(cong)第(di)n次(ci)(ci)接(jie)(jie)(jie)(jie)(jie)触Q到(dao)(dao)(dao)(dao)本(ben)(ben)次(ci)(ci)向(xiang)(xiang)右(you)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)至(zhi)最(zui)(zui)远处(chu)(chu)(chu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)时(shi)(shi)(shi)(shi)(shi)(shi)间(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)表(biao)(biao)(biao)达式(shi);(3)假设小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)经若(ruo)干次(ci)(ci)弹(dan)(dan)回(hui)后(hou)(hou)(hou)(hou)(hou)向(xiang)(xiang)右(you)运(yun)(yun)(yun)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)最(zui)(zui)远点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)恰(qia)好能(neng)(neng)(neng)(neng)到(dao)(dao)(dao)(dao)达B板(ban)(ban)(ban)(ban)(ban),求小(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)球(qiu)(qiu)(qiu)从(cong)(cong)(cong)(cong)(cong)开(kai)始释(shi)放(fang)(fang)至(zhi)刚好到(dao)(dao)(dao)(dao)达B点(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)经历(li)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)时(shi)(shi)(shi)(shi)(shi)(shi)间(jian)(jian)(jian)
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