单项选择题
In a diesel engine lube oil system, which of the following parts should be lubricated first?（）
A.Camshaft beatings
B.Main bearings
C.Piston crowns
D.Cylinder walls
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相关考题
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单项选择题
Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A.open the bypass line
B.cut in the lube oil cooler
C.pressurize the lube oil system
D.top off the expansion tank -
单项选择题
The small end of the connecting rod is attached to the piston with a （）.
A.crankpin
B.sliding wedge
C.wrist pin
D.torque bashing -
单项选择题
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
