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【简答题】
在变压器等效电路中，励磁电阻R m 代表什么电阻?这个电阻能否用万用表测量?
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举一反三
【单选题】You’d better go there by train. The train ticket is _____ the airplane ticket.
A.
as cheap three times as
B.
as three times cheap as
C.
three times cheaper than
D.
three times as cheaper as
【单选题】______________ airplane is faster than ______________ train. [ ]
A.
an; a
B.
An; a
C.
a; a
【单选题】You look familiar. Have we met before?
A.
Yes, we live near each other.
B.
No, I can't.
C.
Maybe next week.
D.
See you later.
【单选题】You'd better go there by train. The train ticket is ________ the airplane ticket. [ ]
A.
as cheap three times as
B.
as three times cheap as
C.
three times cheaper than
D.
cheaper three times than
【单选题】Fred Hi. ______You look familiar. Amanda Yes. We met on campus last week, and you asked me the same question.
A.
What can I help you?
B.
Do you know the way to the campus?
C.
Haven't we met before?
D.
Do you know Bob?
【单选题】You look familiar, have we met before?
A.
你看起来很眼熟，我们见过吗？
B.
你看起来很好，我们没有见过吧？
C.
你看着很随和，我们认识吗？
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