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單項選擇題

Some diesel engines are supercharged with a （）

A.slam charger
B.turbocharger
C.fuel atomizer
D.fuel injector

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單項選擇題

Metal particles accumulated from the wearing of components in a diesel engine can result from lube oil that has been contaminated with（）.

A.abrasive particles
B.metallic oxides
C.corrosive acids
D.any or all of the above

單項選擇題

In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）

A.low firing pressure
B.low exhaust temperature
C.mechanical knock in each cylinder
D.fuel knock in each cylinder

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