A.When receiving by
B.When received by
C.In order to receiving
D.In order to receive
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A.to give off；which
B.giving off；which
C.to give off；that
D.giving off；that
A.cylinder liner
B.cylinder cover
C.piston
D.exhaust valve
A.ff overheat is found, the engine must be stopped for inspection
B.Much heat of the crankcase door indicates that the bearing is overheated
C.If bearing clearance is too large, knocking will be heard in the crankcase
D.If bearing clearance is too large or too small, the white metal may be melted
A.Because the piston is exposed to very high temperature, it must be cooled
B.The lower the piston cooling temperature is, the better it is
C.Both water and lube oil can be used as coolant
D.One of the piston cooling methods is vibration cooling, with better effect
A.crankshaft
B.piston
C.connecting rod
D.bearing
最新試題
Maximum horsepower of a diesel engine is attained （）.
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 （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
To determine if the lube oil filter elements need changing, （）.
Proper filtering and straining of fuel oil is important because the （）.
A thrust bearing is used with a propulsion diesel engine to （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.