A.clogged lube oil piping
B.excessive valve-guide clearance
C.high lube oil viscosity
D.low lube oil temperature
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A.backfire through the air intakes
B.develop less power under load
C.have high firing pressures
D.lift its cylinder relief valves
A.excessively high oil temperatures
B.water or moisture contamination
C.fuel dilution
D.life its cylinder relief vales
In a diesel engine, when refitting piston rings you should （）
Ⅰ.check the ring gap at the smallest diameter of the cylinder
Ⅱ. Remove carbon from the ring groove
A.Ⅰ only
B.Ⅱ only
C.both Ⅰ and Ⅱ
D.neither Ⅰ nor Ⅱ
In a diesel engine, an integral liner is one in which the cooling water （）
Ⅰ.flows through the cylinder liner jackets
Ⅱ.touches the outer side of the liner
A.Ⅰ only
B.Ⅱ only
C.both Ⅰ and Ⅱ
D.neither Ⅰ and Ⅱ
A.piston rings
B.valve guides
C.valve seals
D.all of the above
最新試題
The cetane rating of diesel fuel is an indication of the （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The treatment of the fuel oils involves storage, heating, filtering and（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Cold weather starting of a diesel engine may be made easier by（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）