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單項選擇題

Diesel engine exhaust temperatures may be used to indicate （）.

A.leaking exhaust valves
B.an overloaded cylinder
C.a clogged injector nozzle
D.all of the above

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單項選擇題

In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the （）.

A.lube oil pump suction line
B.lube oil pump discharge line
C.bottom of the lube oil sump
D.outlet from the lube oil header

單項選擇題

Theoretical perfect combustion in a diesel engine yields by-products of （）.

A.aldehydes and carbon dioxide
B.water vapor and carbon monoxide
C.nitrogen and carbon monoxide
D.water vapor and carbon dioxide

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