A.starting air and fuel pumps
B.piston cooling pumps
C.exhaust valves
D.all of the above
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A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the （）
(1) MEP is lower and the scavenging air is cooling the exhaust gases
(2) valve overlap in a four-stroke
A.(1) only is correct
B.(2) only is correct
C.both (1) and (2) are correct
D.Neither (1) or (2) are correct
A.water
B.babbitt
C.iron or steel
D.acids
A.Impurities
B.Lube oil
C.Gasoline
D.Diesel fuel
A.moisture
B.dirt
C.acid
D.air
A.relieve excess fuel oil pressure during the “off” fire cycle
B.admit water to the dry pipe
C.throttle the forced draft fan output for proper combustion
D.reduce excess steam pressure in the boiler
最新試題
Routine monitoring of a diesel engine should include （）.
In a simple mechanical governor, the （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
The ability of the governor to prevent fluctuations in engine speed is termed （）.
Lube oil cannot be efficiently filtered if its （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.