A.water
B.fresh air
C.fuel oil
D.gas
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A.caulked into
B.caulking into
C.pressed into
D.screwed into
A.to prevent the fuel system from becoming air-hound
B.to prevent the fuel system becoming clogged with dirty particles
C.both of the above
D.to prevent the lubricating oil from leaking out of the filter element
A.diameters of journals
B.deflections of crankwebs
C.diameters of crankpins
D.none of the above
A.the cylinder cover is cracked
B.the injector holes is clogged
C.the cams are not properly set
D.fuel pump is leaking
A.too low lead
B.water in fuel
C.too tight spring
D.leakage
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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 （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
To determine if the lube oil filter elements need changing, （）.
Combustion knock occurring in a diesel engine can be caused by （）.
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 （）.
Lube oil cannot be efficiently filtered if its （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
The highest pressure in a diesel engine cylinder normally occurs （）.