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【单选题】
HXD3电力机车当压高32kV且持续（）ms或者是高于35kV且持续1ms时，CI实施保护。A.
3
B.
5
C.
10
D.
12
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举一反三
【简答题】A．They bought her a birthday gift, B．They gave her a farewell party. C．They surprised her during the party. D．They saw her off at the airport.
【简答题】......是一项不可撤销的承诺,blabla......
【单选题】Why did the man my sorry to the woman?
A.
Because he lost her pencilbox.
B.
Because he bought her a peneilbox.
C.
Because he broke her peneilbox.
【单选题】He bought her what she wanted, ______ the fact that they were costly.
A.
even if
B.
as though
C.
only if
D.
regardless of
【单选题】He'll use what he has _____ her a new dress. [ ]
A.
bought
B.
to buy
C.
buying
D.
been bought
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