A.induce carbon formation on cylinder walls
B.improve fuel penetration in the combustion space
C.form a friction reducing film between mating surfaces
D.lubricate the fuel injection
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A.Improper fuel rack positioning
B.Lengthy opening of the exhaust valve
C.Excessively early injection timing
D.Extended light load operation
A.higher torque but lower brake horsepower
B.lower torque but higher brake horsepower
C.higher torque and lower brake horsepower
D.lower torque and higher brake horsepower
A.reduce the wear of bearing surfaces
B.cool the bearing surfaces
C.assist in sealing bearing surfaces
D.all of the above
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
最新試題
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Cold weather starting of a diesel engine may be made easier by（）
The shipboard oil pollution emergency plan will be invalid after （）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）