A.has learnt
B.have learnt
C.learn
D.are learning
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A.the second engineer had got into the engine room
B.the second engineer got into the engine room
C.has the second engineer got into the engine room
D.did the second engineer get into the engine room
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
D.coming down from the TDC
A.open
B.close
C.drain
D.vent
A.discovered
B.had discovered
C.invented
D.had invented
最新試題
The cetane rating of diesel fuel is an indication of the （）
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The ISPS Code consists of a mandatory section-Part A, which shows（）
（） is not installed on the main switchboar.
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Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）