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【单选题】
星形联结的对称三相交流电源的线电压的有效值是三相电压的（）。A.
1倍
B.
2倍
C.
根号3
D.
3倍
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举一反三
【简答题】His speech was greeted with a storm of ______________ . 人们对他的演讲报以雷鸣般的 掌声 。
【简答题】Why doesn' t Tom like his job? [A] Because he doesn't cam very much money. [B] Because he has to work for quite a long time. [C] Because he doesn't have time for lunch. [D] Because sometimes he has to...
【单选题】Why doesn' t Tom like his job?
A.
Because he doesn't cam very much money.
B.
Because he has to work for quite a long time.
C.
Because he doesn't have time for lunch.
D.
Because sometimes he has to work under bad weather.
【简答题】测试说明:Test 1 共两大题,大家做的时候可以把附件下载下来看,答案填在这里就行 Test第一大题:用所给词恰当形式填空,每个词只用一次 1. The mayor decided to ________ his speech in order to leave enough time for his audience to raise questions. 2. It was reported...
【简答题】What is innovation according to Jack Ma in his speech ? 马云在以色列谈创新2.mp4
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