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【简答题】
非正弦周期交流电路的平均功率等于 之和。
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皮皮学刷刷变学霸
举一反三
【单选题】正常物品价格上升导致需求量减少的原因在于
A.
替代效应使需求量增加，收入效应使需求量减少
B.
替代效应使需求量减少，收入效应使需求量增加
C.
替代效应使需求量减少，收入效应使需求量减少
D.
替代效应使需求量增加，收入效应使需求量增加
【单选题】It is time that you __home and I'd rather you__ again tomorrow.
A.
should go; would come
B.
went; came
C.
go; come
D.
should go; will come
【单选题】I'd rather that you ______ tomorrow than today.
A.
came
B.
will come
C.
had come
D.
is coming
【单选题】I'd rather that you ________ home. A. went B. have gone C. will go D. had gone
A.
went
B.
have gone
C.
will go
D.
had gone
【简答题】一台抽水机用的电动机的功率为2.8 kW,每天运行6个小时,问一个月(30天)消耗多少电能?
【单选题】If you ask for my opinion, I'd rather that you ______ for America next week.
A.
will leave
B.
left
C.
would leave
D.
has left
【单选题】正常物品价格上升导致需求量减少的原因在于
A.
替代效应使需求量增加，收入效应使需求量减少
B.
替代效应使需求量增加，收入效应使需求量增加
C.
替代效应使需求量减少，收入效应使需求量减少
D.
替代效应使需求量减少，收入效应使需求量增加
【简答题】乳状液的稳定性理论有什么?
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