A.a check valve
B.a gate valve
C.a pressure reducing valve
D.a quick closing valve
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A.at most references
B.at least references
C.maximum standards
D.minimum standards
A.pollution by oil
B.pollution by noxious liquid substances carried in bulk
C.pollution by sewage from ships
D.pollution by garbage from ships
A.pollution
B.economization
C.safety
D.efficiency
A.LL66
B.ITC69
C.ILO No147
D.SOLAS 74
A.clean report
B.serious deficiencies
C.clear grounds
D.detention report
最新試題
The shipboard oil pollution emergency plan will be invalid after （）
The main purpose of port State control is not to（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
The cetane rating of diesel fuel is an indication of the （）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）