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【单选题】
中性点电压由直流分量和交流电压分量叠加而成，其交流分量随发动机转速的升高而（）。A.
减小
B.
增加
C.
不变
D.
不确定
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举一反三
【单选题】Speaker A: It's wonderful to hear that your book has been published. Speaker B: ______
A.
Oh, it's nothing special.
B.
It's OK.
C.
I'm glad to hear you flatter.
D.
No. Not a big deal for that.
【单选题】When and where to build the factory ___ yet. [ ]
A.
is not decided
B.
are not decided
C.
has not decided
D.
have not decided
【单选题】Speaker A: I'm not at all satisfied with the service. Speaker B:________
A.
Nobody has complained like that before.
B.
I sincerely apologize for that.
C.
I wonder why you are satisfied with it.
D.
It's not our fault as there are too many customers.
【简答题】元代陶瓷制作最有成就的是（）和（）的烧成。
【简答题】背吃刀量一般指工件 _____ 表面和 _____ 表面间的垂直距离。
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