A.seating
B.bedplate
C.entablature
D.cylinder block
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A.through bolts
B.jack bolts
C.holding down bolts
D.tap bolts
A.in which
B.on which
C.to which
D.by which
A.there is a minor emergency
B.there is an actual emergency
C.there were a minor emergency
D.there were an actual emergency
A.If the first stand-by set failed
B.If the first stand-by set fails
C.If the first stand-by set will fail
D.If the first stand-by set doesn’t fail
A.in addition to
B.in addition that
C.except for
D.except where
最新試題
If separating effect is not good, which measure should be taken （）
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（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
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