單項(xiàng)選擇題

Which of the listed diesel engine systems is likely to create the problem of a cylinder regularly misfiring?（）

A.Lubrication
B.Cooling
C.Fuel
D.Electric ignition

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單項(xiàng)選擇題

When the normal compression ratio of a diesel engine is not very high, misfiring at light loads may be caused by （）

A.overloading the engine
B.low exhaust valve lift
C.excessive cylinder cooling
D.insufficient mechanical clearance

單項(xiàng)選擇題

In a two-stroke/cycle diesel engine, the exhaust gases are expelled from the cylinder by the（）

A.exhaust manifold
B.valve bridge
C.pressure of the fresh air charge
D.valve adjusting gear

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