题目内容

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

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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

Employ motivational techniques to arouse students’ interest

A. 对
B. 错