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【单选题】
BV表示( )。A.
铜芯橡胶绝缘电线
B.
铜芯聚氯乙烯绝缘连接软线
C.
铜芯聚氯乙烯绝缘电线
D.
铜芯聚氯乙烯绝缘软线
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举一反三
【单选题】―All the main tourist attractions are _______ easy reach of the hotel. ―No wonder all the rooms keep fully booked all the year round.
A.
within
B.
over
C.
beyond
D.
under
【单选题】-Hi! George. How are you? - _______________
A.
That's all right.
B.
Don't mention it.
C.
How are you?
D.
Fine, thanks. And you?
【单选题】All of the following is true of cosmetic surgery EXCEPT______.
A.
it should be done hi one's thirties rather than fiftieth
B.
its cost has fallen considerably
C.
it is available to most people including the most advanced laser technology
D.
it has become more and more convenient
【简答题】四个二极管组成桥式,共有 个连接点,其中两个 接点,两个异极性接点
【单选题】What is the main topic of this passage?
A.
How business managers view hi-tech
B.
Benefits of the practice of teleworking
C.
How to cut down the costs of small buinesses
D.
Relations between employers and employees
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