A.seized
B.clogged
C.melted
D.inserted
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A.sufficient quantity； measured
B.measured quantity；sufficient
C.excessive quantity；sufficient
D.the less quantity the better；the more the better
A.atmosphere
B.the fresh water
C.compressed air
D.chemical compounds
A.a filter
B.a strainer
C.a magnetic filter
D.a fine strainer
A.tank
B.sump
C.vessel
D.bottle
A.a coil spring
B.a sealing ring
C.an oil distributor ring
D.main seal ring
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To determine if the lube oil filter elements need changing, （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
In using reduction gears to obtain efficient propeller speeds, （）.
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 （）.
White smoke exhausting from an operating diesel engine may indicate （）.
The main purpose of the piston oil scraper rings is to （）.
A diesel engine piston ring face is in direct contact with the （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
Proper filtering and straining of fuel oil is important because the （）.