A.constant
B.pulse
C.high
D.none of the above
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A.piston crown
B.piston groove
C.piston skirt
D.piston ring belt
A.craned out
B.rolled out
C.lifted out
D.turned out
A.aluminum-plated
B.bronze-plated
C.zinc-plated
D.chromium-plated
A.must be provided
B.may be provided
C.have provided
D.can be provided
A.has to be cooled
B.has heated
C.has preheated
D.has to be preheated
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If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
Combustion knock occurring in a diesel engine can be caused by （）.
Proper filtering and straining of fuel oil is important because the （）.
A thrust bearing is used with a propulsion diesel engine to （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
In a simple mechanical governor, the （）.
What is the function of the thrust bearing?（）
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
The function of diesel engine piston compression rings is to （）.
The highest pressure in a diesel engine cylinder normally occurs （）.