A.contaminated with sludge
B.contaminated with carbon
C.diluted with fuel oil
D.diluted with water
您可能感興趣的試卷
你可能感興趣的試題
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
The minimum speed an engine must attain before ignition can occur depends upon （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
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 （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
A diesel engine piston ring face is in direct contact with the （）.
Routine monitoring of a diesel engine should include （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.