单项选择题
Which of the conditions listed may occur in an operating diesel engine if air pockets form within the cylinder head circulating water passages? （）
A.Hydraulic stress and distortion will develop
B.Hot spots will develop
C.Fuel oil viscosity will increased
D.An increase in trapped deposits of scale and dirt
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相关考题
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单项选择题
The two strokes of a two-stroke/cycle diesel engine are （）
A.power and intake
B.intake and exhaust
C.exhaust and compression
D.compression and power -
单项选择题
Which of the items listed causes a direct acting mechanical governor to operate the engine fuel control linkage?（）
A.Hydraulic oil pressure
B.Servomotor action
C.Flyweight centrifugal force
D.Relay motion -
单项选择题
Combustion knock occurring in a diesel engine can be caused by （）
A.low coolant temperature
B.insufficient fuel
C.high ambient temperature
D.carbon buildup on the injector tips
