A.cooling water
B.vapor from the boiler
C.starting air
D.hot gases
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A.constant
B.pulse
C.high
D.none of the above
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
最新試題
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
In a simple mechanical governor, the （）.
White smoke exhausting from an operating diesel engine may indicate （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
Lube oil cannot be efficiently filtered if its （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
An automated diesel engine should normally shut down due to （）
The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.