题目内容

导体长期发热的特点:

A. 发热由正常工作电流引起
B. 发热热量少,温升不高
C. 发热连续且长期
D. 发热和放热相等

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电力拖动是指用电能作为动力来使某机器运动的一种拖动方式

A. 对
B. 错

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These frightful experiences are branded on his _________.expressrealizeperfectmemoryscenesilencefamiliaroccuremergencyurgentscoldalbum

I hate to_______ , but you mustn't scatter your things all over the place.expressrealizeperfectmemoryscenesilencefamiliaroccuremergencyurgentscoldalbum

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