A.inside micrometer
B.feeler gauge
C.adjustable trammel
D.sighting device
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A.starting air and fuel pumps
B.piston cooling pumps
C.exhaust valves
D.all of the above
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
最新試題
To determine if the lube oil filter elements need changing, （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
Combustion knock occurring in a diesel engine can be caused by （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
The function of diesel engine piston compression rings is to （）.
Maximum horsepower of a diesel engine is attained （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.