A.excessively high oil temperatures
B.water or moisture contamination
C.fuel dilution
D.life its cylinder relief vales
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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
A.excessively late fuel injection
B.oil in the air charge
C.water in the fuel
D.injection continuing after the fuel charge is ignited
A.injection pump plungers stuck or worn
B.low compression
C.solenoid stuck open
D.fuel tank too full
最新試題
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
Which of the following items don’t belong to dock repair works?（）
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
The main purpose of port State control is not to（）
Cold weather starting of a diesel engine may be made easier by（）
Diesel engine air start system check valves are opened by （）