A.contaminated with sludge
B.contaminated with carbon
C.diluted with fuel oil
D.diluted with water
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A.the solid impurities of large particle
B.the solid impurities of fine particle
C.the water content
D.both water and solid impurities
A.brought about
B.caused for
C.resulted from
D.led
A.sliding piston rings
B.engines camshaft
C.small pumps
D.forced feed system
A.excessive heat
B.friction
C.oxidation
D.high pressure
A.is made to circulate out of the system
B.is made to circulate within the system
C.is made circulate within the system
D.is made circulate out of the system
最新試題
Combustion knock occurring in a diesel engine can be caused by （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
What is the function of the thrust bearing?（）
In a simple mechanical governor, the （）.
The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
Proper filtering and straining of fuel oil is important because the （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
White smoke exhausting from an operating diesel engine may indicate （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.