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單項(xiàng)選擇題

Increasing the load on an engine equipped with a constant speed mechanical governor, will cause the engine speed to initially （）.

A.increase
B.decrease
C.fluctuate
D.remain constant

單項(xiàng)選擇題

A dirty diesel engine oil filter element can best be detected by （）.

A.visual inspection of the elements
B.the pressure drop across the filter
C.high lube oil sump temperature
D.decrease in oil viscosity from the filter