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问题 单项选择题

人与带电体、带电体与带电体、带电体与地面(水面)、带电体与其他设施之间需保持的最小距离叫( )，又称为安全间距。

A．安全净距
B．最小距离
C．间距
D．故障间距

答案

参考答案：A

完形填空

Everyone is good at something, but some people are truly小题1:___________(talent). It’s always interesting to watch other people show小题2:__________ (they) talents. Talent shows are 小题3:___________ (get) more and more popular. All these shows try to look for the best singers, the most 小题4:_________ (excited) magicians, the funniest singers and so on. All kinds of people join these shows. But who can play the piano the best or sing the most小题5:__________ (beautiful)? That’s up to you to decide. When people watch the show, they usually paly a role in小题6:__________ (decide) the 小题7:_________ (win). However, not everybody enjoys小题8:_______ (watch) these shows. Some think that the lives of the perforners are 小题9:_______(make) up. For example, some people say they are poor farmers, but in fact they are just actors. However, if you don’t take these shows too小题10:_________ (serious), they are fun to watch. And one great thing about them is that they give people a way to make their dreams come true.

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问答题 简答题

常用灭火剂有哪些？
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