A.piston crown
B.piston groove
C.piston skirt
D.piston ring belt
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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
A.inefficiency
B.oiliness
C.detergency
D.purity
最新試題
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
Proper filtering and straining of fuel oil is important because the （）.
Maximum horsepower of a diesel engine is attained （）.
In using reduction gears to obtain efficient propeller speeds, （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
An automated diesel engine should normally shut down due to （）
The main purpose of the piston oil scraper rings is to （）.