A.dissolved oxygen
B.chlorides
C.sludge
D.dissolved nitrogen
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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
A.reduce gas flow turbulence
B.prevent exhaust gas corrosion
C.increase the rate of combustion
D.increase the rate of heat transfer
最新試題
Combustion knock occurring in a diesel engine can be caused by （）.
In using reduction gears to obtain efficient propeller speeds, （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
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To determine if the lube oil filter elements need changing, （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
A diesel engine piston ring face is in direct contact with the （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.