A.dust entering the high pressure stage
B.lube oil carbonization
C.discharge pulsations
D.inter-stage vapor lock
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A.increased compression ratio
B.decreased compression ratio
C.increased bearing clearance
D.decreased bearing clearance
A.The cetane number is obtained by comparing the fuel with cetane a colorless liquid hydrocarbon
B.The higher the cetane number, the shorter the ignition lag
C.The highest cetane number of fuel is 100
D.All of the above
A.The cetane number affects the amount of injection lag
B.The cetane number is an indication of the fuels viscosity
C.Ignition lag is reduced with fuels having a high cetane number
D.The cetane number is of little significance in the combustion process
A.improved cold weather starting
B.excessive fuel oil consumption
C.reduced ignition lag
D.smoother engine operation
A.indicates the amount of abrasive material in the fuel
B.affects the starting ability of a cold engine
C.determines the amount of fuel penetration engine
D.affects the compression ratio of an operating engine
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Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
The shipboard oil pollution emergency plan will be invalid after （）
Cold weather starting of a diesel engine may be made easier by（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The cetane rating of diesel fuel is an indication of the （）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）