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
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
The function of diesel engine piston compression rings is to （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
To determine if the lube oil filter elements need changing, （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
Routine monitoring of a diesel engine should include （）.
In using reduction gears to obtain efficient propeller speeds, （）.
Combustion knock occurring in a diesel engine can be caused by （）.
Maximum horsepower of a diesel engine is attained （）.