A.starting air and fuel pumps
B.piston cooling pumps
C.exhaust valves
D.all of the above
您可能感興趣的試卷
你可能感興趣的試題
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
A diesel engine piston ring face is in direct contact with the （）.
Routine monitoring of a diesel engine should include （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
What is the function of the thrust bearing?（）
The ability of the governor to prevent fluctuations in engine speed is termed （）.
The main purpose of the piston oil scraper rings is to （）.
In using reduction gears to obtain efficient propeller speeds, （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
A thrust bearing is used with a propulsion diesel engine to （）.