A.flash；fresh air
B.wash；fresh water
C.flush；compressed air
D.rush；diesel oil
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A.has learnt
B.have learnt
C.learn
D.are learning
A.the second engineer had got into the engine room
B.the second engineer got into the engine room
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A.Having adjusted
B.Being adjusted
C.To adjust
D.Adjusted
A.coming up from the BDC
B.coming up from the TDC
C.coming down from the BDC
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A.open
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C.drain
D.vent
最新試題
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