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
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To determine if the lube oil filter elements need changing, （）.
Proper filtering and straining of fuel oil is important because the （）.
The main purpose of the piston oil scraper rings is to （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
An automated diesel engine should normally shut down due to （）
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
The function of diesel engine piston compression rings is to （）.
Diesel engine control can be obtained by the bridge （）.