A.not good
B.good
C.better
D.the best
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A.The lower；the worse
B.The higher；the better
C.The lower；the better
D.The highest；the worst
A.slope
B.base
C.top
D.bottom
A.BHP
B.MCR
C.IHP
D.MEP
A.barrel
B.ram
C.piston
D.rod
A.inlet port
B.exhaust port
C.spill port
D.scavenge port
最新試題
Cold weather starting of a diesel engine may be made easier by（）
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