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
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The treatment of the fuel oils involves storage, heating, filtering and（）
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
The condensers located in various stages of a flash evaporator are cooled by（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
The ISPS Code consists of a mandatory section-Part A, which shows（）