试题与答案

电力系统N-1准则？

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题型：问答题 简答题

题目：

电力系统N-1准则？

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A

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题型：填空题

阅读短文，用适当的词填空，使短文意思完整。

     The mobile phone is a useful thing, but maybe I don't know __1__ to use it. Sometimes it makes things

difficult for me.

     One day I wanted to see my friend nearby. I could __2__ at his house in five minutes, but I looked at

my mobile phone and thought __3__ would be better to ring him up. I __4__ him for the first time, but the

line was busy. Five minutes later, there was an answer, but it was the wrong number. Then I tried __5__

and this time I got an answer from him.

     I asked him if he was at home in the afternoon. And he said at __6__ I thought he said-he would be

at home all afternoon. So I went to his house, but then I found __7__ in. I called him for the fourth time.

This time I got so angry that I __8__, "You are not at home? But you just told me over the telephone that

you would be at home all afternoon!"

     Here __9__ his answer, "No, I said:' I will NOT be at home all afternoon!"

     I went back to my room, sat down in front of the mobile phone and looked at it. What __10__ could I

do? Nothing!
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