A.Lube oil is diluted and its viscosity is reduced
B.Sulfuric acid is formed
C.Bearings become pitted ad immediately fail
D.Valve stems develop sludge deposits
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A.excessive surging at governed speed
B.combustion knock under load
C.poor fuel combustion
D.all of the above
The sludge tank installed in the diesel engine room is used to collect（）
Ⅰ.sludge from the fuel oil settling tanks ad centrifuge
Ⅱ.water that has been collected in the settling tank
A.Ⅰonly
B.Ⅱ only
C.bothⅠand Ⅱ
D.neitherⅠor Ⅱ
A.ignition lag
B.engine horsepower
C.lube oil system pressure
D.specific fuel consumption
A.governor flyweight action on a pilot valve which controls fuel injection
B.governor flyweight motion acting on fuel controls through suitable linkage
C.positioning a butterfly valve in the fuel delivery system positioning
D.a servomotor piston attached to the fuel controls
A.Pre-lube cylinders with hand cranks
B.Open all air space drain cocks
C.Open all indicator valves
D.All of the above
最新試題
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
The main purpose of port State control is not to（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
The treatment of the fuel oils involves storage, heating, filtering and（）
If separating effect is not good, which measure should be taken （）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
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
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 following items don’t belong to dock repair works?（）