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
57
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
职业拳击在社会各个阶层中激起了种种情绪,并引发了各种问题,其中主要是道德和医疗问题。(awidevarietyof)Professionalboxing
TheBritishgovernmentrecentlyannouncedaproposaltointroducehealthcar
Doyouthinktheyhave()foodforallthesepeoplehere?A、subsequentB、beneficia
患者,男性,52岁,支气管哮喘发作,持续6小时,不能平卧,大汗淋漓,口唇发紫,呼
A.葡萄球菌 B.铜绿假单胞菌 C.大肠埃希菌 D.破伤风杆菌 E.B族
在加涅看来下列学习类别中属于智力技能范畴的是A.辨别 B.概念 C.规则
案情简介:A市的左公司和B市的右运输公司在A市签订了左公司长期在B市内的货物运输
()从诉讼程序方面保证实体法的正确实施,保证实体权利、义务的实现。A.刑事诉讼法
某常规技术方案的净现值函数曲线如图所示,则该方案的内部收益率为( )。(201
最新回复
(
0
)