单项选择题

Which of the listed conditions will occur if a diesel engine exhaust valve is leaking?（）

A.Loss of compression for that cylinder
B.Misfiring or rough running
C.Damage to the valve
D.All of the above

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单项选择题

Which of the following conditions will develop if the flow of ‘raw’ cooling water to diesel engine is obstructed?（）

A.Air will enter the cooling system
B.Carbon will plug the water cooled exhaust manifolds
C.The jacket water temperature will rise
D.The lube oil viscosity will increase

单项选择题

Aburned exhaust valve may be detected by a higher than normal （）

A.firing pressure
B.exhaust temperature from a particular cylinder
C.cooling water temperature
D.compression pressure

单项选择题

In a diesel engine, excessive cylinder liner wear will cause （）
Ⅰ.increased blow-by
Ⅱ.wear between the piston ring and groove

A.Ⅰonly is correct
B.Ⅱ only is correct
C.both Ⅰ and Ⅱ are correct
D.neither Ⅰ or Ⅱ are correct