A.reduce the wear of bearing surfaces
B.cool the bearing surfaces
C.assist in sealing bearing surfaces
D.all of the above
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A.Non-harmonic speed
B.Critical speed
C.Maximum speed
D.Design maximum speed
A dirty fuel oil filter is can be detected by （）
Ⅰ.fuel oil analysis
Ⅱ.observing the pressure drop across the filter
A.Ⅰonly
B.Ⅱonly
C.eitherⅠorⅡ
D.neitherⅠnor
A.increase the density of the intake air
B.decrease turbocharger power usage
C.reduce exhaust gas temperature
D.compensate for turbocharger PRM fluctuations
A.high oil pressure
B.excessive bearing end play
C.plugged oil control rings
D.engine overload
A.leaking delivery valve
B.excessive bearing end play
C.plugged injector spray hole
D.increased plunger stroke
最新試題
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The treatment of the fuel oils involves storage, heating, filtering and（）
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（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Using a file without a handle may result in （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
（） is not installed on the main switchboar.