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【单选题】
以下关于三相异步电动机的起动电流的说法中，描述正确的是 。A.
与电源电压有关，电压越高，起动电流越大
B.
与负载大小有关，负载越大，起动电流越大
C.
与电网容量有关，容量越大，起动电流越小
D.
与电网频率有关，频率越大，起动电流越小
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【简答题】阅读下列短文，根据要求完成下列题目。 Miss Wen is my favourite teacher. (A) She began to teach us Chinese three years ago. She is a young girl with long, black hair and a beautiful smile. When she came to our school, I ...
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【简答题】Liu Xiaohua is 12 years old. She is from Mianyang, Sichuan Province. When Premier Wen Jiabao visited people in the Jiuzhou Gymnasium, he met Liu Xiaohua. Premier Wen held her hand and told her not to ...
【单选题】What did Mrs. Green do after she found the wrong shoe?
A.
She phoned the shoemaker.
B.
She went to have dinner.
C.
She felt something wrong.
D.
She didn't remember the shoemaker.
【单选题】____ to New York, her father has not heard from her.
A.
Because she went
B.
After she went
C.
When she went
D.
Since she went
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