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绘图题：试画出利用直流法测定电流互感器极性的原理接线图。

答案

参考答案：

如图E-26所示。

填空题

如果m，n互为相反数，那么|m+n﹣2|=( )
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填空题
掌握短文大意，并选择方框中的词，用适当的形式填空。
want    both   same    corner   speak
     I have a good boy friend. We call him Mike. He lives in Canada. He __1__ English. He is the same
age as (和) I. We are __2__ 13 years old. He often goes to the English __3__. He likes it a lot. He has
a small family. His parents are both workers. They work in the __4__ office. They all __5__ to come to
China. They all like Chinese food.
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