问题 问答题 简答题

如何判断330kV及以上的电气设备有无电压?

答案

参考答案:

对330kV及以上的电气设备,在没有相应电压等级的专用验电器的情况下,可使用绝缘棒代替验电器,根据绝缘棒端有无火花和放电劈啪声来判断有无电压。

阅读理解

Dear Linda,

I have been in England three months now, and it’s my first time to be here. I hope you don't think I've forgotten you. There have been so many places to see and so many things to do that I've not had much time for writing letters.

I shall soon be starting my studies at King's College. So far I've been learning about England and British ways of living. I won't tell you about London. There are plenty of books you can read and plenty of pictures you can look at. I'm sure you'll be more interested to know what I think about the life here.

I find some of the customs (风俗) new and interesting. People here do not shake hands as much as we do in Europe. During the first few weeks I was often surprised because people did not put out their hands when I met them. Men raise their hats to women but not to each other.

Yours

Alice

小题1:The writer came to London from _________.

A.Asia

B.Europe

C.America

D.Africa小题2:The writer __________.

A.has never been to England before

B.came to England just now

C.came to England three months ago

D.will come to England in three months小题3:She has _________.

A.not written any letters

B.much time to write letters

C.no time to write letters

D.a little time to write letters小题4:She came to England to _________.

A.study

B.make a living

C.learn British ways of living

D.learn about life there小题5:Englishmen ___________.

A.do not often shake hands with friends when they meet

B.often shake hands with friends when they meet

C.raise their hats to all friends when they meet

D.do not raise their hats to friends when they meet

单项选择题 A1型题