首页/ 题库 / [单选题]下列各种说法中正确的是( )。的答案

下列各种说法中正确的是( )。

单选题
2021-09-01 23:43
A、若闭合曲面内无电荷,则闭合曲面上的场强必处处为零。
B、若闭合曲面上各点的场强为零,则闭合曲面内必无电荷。
C、若闭合曲面上场强处处不为零,则闭合曲面内必有电荷。
D、若闭合曲面内有电荷,则闭合曲面上场强处处不为零。
E、通过闭合曲面的电场强度通量为零时,闭合曲面上各点的场强必为零。
F、.通过闭合曲面的电场强度通量仅仅是由闭合曲面内的电荷决定的。
查看答案

正确答案
F

试题解析

相关题目
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

指令ORS功能,可实现多个指令块的“与”运算。
工业厂房地面中直接承受各种物理和化学作用的组成部分为( )。
Logistic回归系数与优势比OR的关系为()。
在应用ORS液的过程中,错误的是()
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
设a=5,b=4,c=3,d=2,下列表达式的值是 3>2*b Or a=c And b<>C Or c>d
设a=5,b=4,c=3,d=2,下列表达式的值是( )。 3>2*b Or a=c And b<>c Or c>d
设a=5,b=4,c=3,d=2下列表达式的值是 3>2*b Or a=c And b<>C Or c>d
设a=5,b=4,c=3,d=2,下列表达式的值是 3>2*b Or a=c And b<>c Or c>d
设a=2,b=3,c=4,d=5,下列表达式的值是( )。 3>2*b Or a=c And bc Or ba+c
设t=2,b=3,c=4,d=5,则下面语句输出的是( )。 Print3>2*b Or a=c And bc Or c>d
广告位招租WX:84302438

免费的网站请分享给朋友吧