A.sufficient quantity； measured
B.measured quantity；sufficient
C.excessive quantity；sufficient
D.the less quantity the better；the more the better
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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
A.the crosshead
B.the journals of the crosshead
C.the crosshead shoes
D.the guides
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Maximum horsepower of a diesel engine is attained （）.
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