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【单选题】
正弦量的振幅值一定是( )。A.
峰值
B.
最大值
C.
有效值
D.
平均值
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举一反三
【单选题】You should go to the grand opening ceremony, ____________ ?
A.
aren't you
B.
shouldn't you
C.
wouldn't you
D.
don't you
【单选题】The opening in the deck beneath the anchor windlass that leads to the chain locker is the ____.
A.
Hawse pipe
B.
Fall pipe
C.
Drop-pipe
D.
Spill pipe
【单选题】---- I haven’t got the ticket for the opening ceremony of the 2010 Shanghai World Expo. ---- Don’t worry. It’ll be broadcast_______ on April 30. Don’t miss it.
A.
lively
B.
alive
C.
live
D.
living
【单选题】I don't mind _____ the door. [ ]
A.
you open
B.
your open
C.
your opening
D.
yours opening
【单选题】―We didn’t see Robert at the opening ceremony yesterday. ―No, he _______ it.
A.
mustn’t have attended
B.
needn’t have attended
C.
needn’t attend
D.
didn’t need to attend
【单选题】I don't mind _ the window. It is hot in the room. [ ]
A.
to open
B.
opened
C.
opening
D.
to opening
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