A.Cylinder cover
B.Main bearing
C.The exhaust valve
D.The piston movement
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A.The bedplate
B.The column
C.The main bearing
D.The double bottom
A.Because
B.Owing to
C.For
D.No matter
A.The driven gear
B.The drive
C.The grease
D.The lubricating oil
A.Distilled
B.Distilling
C.Boiling
D.Boiled
A.Between；more commonly
B.Among；the most commonly
C.Between；not more commonly
D.Among；not the most commonly
最新試題
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
In using reduction gears to obtain efficient propeller speeds, （）.
To determine if the lube oil filter elements need changing, （）.
The function of diesel engine piston compression rings is to （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
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When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
Lube oil cannot be efficiently filtered if its （）.