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【单选题】
四冲程发动机一个工作循环曲轴旋转两,凸轮轴旋转( )A.
二
B.
一
C.
半
D.
三
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反馈参考答案：
举一反三
【单选题】The new machine, as is reported in the local newspaper, will work twice as fast, _____ greatly reducing costs.
A.
thus
B.
anyhow
C.
yet
D.
even
【单选题】That day the writer found ______.
A.
he had lost his wallet
B.
he had left his wallet at home
C.
his wallet was stolen by a thief
D.
his wallet was lying under the table
【单选题】Any student who _________ his homework is unlikely to pass the examination.
A.
reduces
B.
offends
C.
practices
D.
neglects
【单选题】For some time now, world leaders _______ out the necessity for agreement on arms reduction.
A.
had been pointing
B.
have been pointing
C.
were pointing
D.
pointed
【单选题】According to the latest research, getting enough sleep is _____ to maintaining good health and reducing stress.
A.
essential
B.
promising
C.
special
D.
sensible
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