首页
登录
职称英语
Which of the following is true within an atom according to the passage? [br] The
Which of the following is true within an atom according to the passage? [br] The
游客
2023-07-18
75
管理
问题
Which of the following is true within an atom according to the passage? [br] The lightning-like spark is created by ______.
选项
A、the movement of the dome
B、the repelling between the collected electrons
C、the escaping of the electrons from the dome
D、the collection of many electrons on the dome
答案
C
解析
本题问“像闪电一样的光是……造成的”。根据lightning可定位到文章第三段第五句,此句之前是解释形成的原因。Van de Graaff发生器有一个发动机和橡胶带将电子置于一个钟形罩上,生成巨大的静电荷。由于相同电荷互相排斥,罩上集结的电子就互相排斥,在罩上的电子数过多时就会产生电子逃逸,形成像闪电一样的光。故[C]“电子由钟形罩上逃逸”正确。[A]“钟形罩的运动”。Van de Graaff发生器只是产生放电现象的仪器,其本身并不运动。所以不正确。[B]“集结电子的互相排斥”。电子相互排斥,但如果在罩上集结的电子数不够多,也不会产生逃逸现象,形成闪电。[D]“电子在钟形罩上的集结”。罩上集结的电子不产生逃逸现象,也不会形成闪电,所以也不是直接的原因,本项不够明确。
转载请注明原文地址:https://tihaiku.com/zcyy/2849191.html
相关试题推荐
Theypromisedthattheywould______(本周内起草一份合同).drawupacontractwithinthis
Accordingtothelatestsurvey,GeorgeW.BushJr.doesn’thaveachancetowin
Luxembourglies______Belgium,GermanyandFrance.A、amongB、withinC、betweenD、i
RiteofPassageisagoodnovelbyanystandards;______itshouldrankhighona
Accordingtotheresultoftheresearch,smokerswillknowwhichbrandsaremost
Accordingtothenewtaxlaw,anymoneyearnedoverthatlevel______(以59%的比率缴税)s
Accordingtothereport,about60%oftrafficjamsinthiscity______(是由行车不慎造成的)
Allofthefollowingwerereasonsfortheproposaloftheamendmenttotheconst
Allofthefollowingwerereasonsfortheproposaloftheamendmenttotheconst
Theplanindicatedthatthisobjectivewas______inthefollowingway.A、attaini
随机试题
Readthetextbelowfromareportaboutsalesfigures.Inmostlines(41-52),the
Shebelievesintheprinciple______toloveistogive,nottotake.A、howB、whi
[originaltext]M:Morning,Ms.Samino,welcometoourstudio.W:Thanks,myplea
[originaltext]M:Hi,MissRowling,howoldwereyouwhenyoustartedtowrite?
Overthepastdecade,significantresearchhasdemonstratedwhatmanyhavek
预作用系统的联动控制设计时,手动控制方式,应将(),用专用线路直接连接至设
文化行政部门和文化市场综合执法机构要积极会同有关部门,以文化市场经营单位安全生产
二维码标签技术多应用于物联网的()A.网络层 B.感知层 C.应用层 D
下列穴位中可治疗呃逆的是A:梁丘 B:足三里 C:丰隆 D:内庭 E:攒
牙周膜的正常厚度为A.0.1~0.28mm B.0.15~0.38mm C.
最新回复
(
0
)