A.discovered
B.had discovered
C.invented
D.had invented
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A.because
B.thanks to
C.dues to
D.owing to
A.because
B.since
C.due to
D.owing to
A.when
B.how
C.where
D.whether
A.slow-speed diesel
B.medium-speed diesel
C.high-speed diesel
D.constant-speed diesel
A.injector
B.compressor
C.diffuser
D.siphon
最新試題
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
If separating effect is not good, which measure should be taken （）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Cold weather starting of a diesel engine may be made easier by（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
The main purpose of port State control is not to（）
To proceed to the assistance of a ship in distress is（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）