单选题If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?()AThe oil control rings will seal improperly and wear rapidlyBThe piston will overheat due to insufficient lubricationCExcessive oil will remain on the cylinder wallDLight brown smoke will emanate from the engine exhaust

单选题
If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?()
A

The oil control rings will seal improperly and wear rapidly

B

The piston will overheat due to insufficient lubrication

C

Excessive oil will remain on the cylinder wall

D

Light brown smoke will emanate from the engine exhaust


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Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?A.Control the amount of lube oil burned in the combustion chamberB.Transmit heat from the piston to the cylinder linerC.Prevent damage to ring groove inserts by acting as a heat damD.Dissipate combustion chamber gas pressure by channeling it through the ring gap

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