题目内容

变电所和配电所的区别在哪?

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城市轨道交通供电系统是电力系统的一个电力用户。

A. 对
B. 错

Give clear & careful directions about what needs ()

A. to be done
B. to done
C. be done

Employ motivational techniques to arouse() interest

Employ motivational techniques () arouse students’ interest

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