A.injection pump plungers stuck or worn
B.low compression
C.solenoid stuck open
D.fuel tank too full
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A.facilitate bi-directional operation
B.provide the greatest pump efficiency
C.prevent pump clogging from marine growth
D.prevent cavitation at the pump outlet
A.raw water pump discharge
B.expansion tank outlet
C.cooling water heat exchanger
D.outlet engine jacket water outlet
In a diesel engine, a cylinder liner should be replaced if it is （）
Ⅰ.Scuffed
Ⅱ.Scored
A.Ⅰ only is correct
B.Ⅱ only is correct
C.both Ⅰ and Ⅱ are correct
D.neither Ⅰ or Ⅱ are correct
A.metal particles loosened by wear
B.air when air cleaners are not used
C.condensation of water vapors
D.breakdown of the lubricating oil by dilution
A.reduce wear on the valve stem
B.permit the use of alloy valve seat materials
C.reduce heat transfer from the valve seat
D.facilitate valve removal for servicing
最新試題
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Diesel engine air start system check valves are opened by （）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
Which of the following items don’t belong to dock repair works?（）