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【单选题】
一个 8 极交流电机,采用三相双层叠绕组,其并联支路数 不 可能为()。A.
1
B.
2
C.
3
D.
8
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反馈参考答案：
举一反三
【单选题】The Customs officer said that nothing but some personal belongings ______in the woman’s suitcase.
A.
were found
B.
was to be found
C.
was found
D.
has been found
【单选题】Questions 12 to 15 are based on the conversation you have just heard.
A.
Because the man didn’t offer help to the woman.
B.
Because the man failed to answer the woman’s question.
C.
Because the man didn’t recognize the woman.
D.
Because the man asked the woman something personal.
【多选题】水在正常沸点 373K 下的 Δ vap H m =40.63 kJ·mol -1 , 今将 373K, 100 kPa 下的 1mol 液态水向真空等温蒸发为同温同压的水蒸汽(设为理想气体),则该过程
A.
不做功
B.
可视为可逆过程
C.
Δ H =40.63 kJ
D.
Δ G =0 kJ
【单选题】Why did the man apologize to the woman?
A.
Because the man didn’t offer help to the woman.
B.
Because the man failed to answer the woman’s question.
C.
Because the man didn’t recognize the woman.
D.
Because the man asked the woman something personal.
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