A.excessive crankcase pressure
B.excessive lube oil temperature
C.contamination of the lube oil by water
D.contamination of the cooling water by lube oil
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A.dissolved oxygen
B.chlorides
C.sludge
D.dissolved nitrogen
A.boiler water level is low
B.feedwater is too hot
C.boiler steam demand is low
D.feedwater is too cold
A.intake valves
B.carburetor
C.exhaust ports
D.injector nozzles
A.clearance
B.crush
C.pitch
D.thrust
A.bottom blow the boiler
B.treat the water with caustic soda
C.treat the water with chemical scavengers
D.reduce the water alkalinity to recommended readings
最新試題
Combustion knock occurring in a diesel engine can be caused by （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
In a simple mechanical governor, the （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
The main purpose of the piston oil scraper rings is to （）.
To determine if the lube oil filter elements need changing, （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
In using reduction gears to obtain efficient propeller speeds, （）.
Diesel engine control can be obtained by the bridge （）.