三相异步电动机转子的额定转速N与同步转速N0、转差率S之间的关系为()。
A.N=N0
B.N=SN0
C.N=(1-S)N0
D.N=(S-1)N0
参考答案:C
—What are you going to be when you grow up, Sam?
—________ teacher like you. [ ]
A. A
B. An
C. The
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何谓“反治”?