题目内容

每根相线与中性线之间的电压称为线电压。()

A. 对
B. 错

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在一个三相桥式整流电路中有二极管损坏不影响整流效果。()

A. 对
B. 错

三相交流发电机正常工作时，转子输出三相交流电。( )

A. 对
B. 错

The Chinese______ means that Chinese people are always involved in foreign manufacturing in China.

A. government
B. policies
C. people
D. regulations

If the______ does not come in time, we will lose the border.

A. send
B. delivery
C. post
D. turnover