A.barrel
B.ram
C.piston
D.rod
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A.inlet port
B.exhaust port
C.spill port
D.scavenge port
A.opened up
B.closed off
C.lined up
D.taken off
A.base circle
B.slope
C.bottom point
D.top point
A.injection
B.penetration
C.atomization
D.compression
A.gears
B.rams
C.barrels
D.cams
最新試題
The main purpose of port State control is not to（）
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Which of the following items don’t belong to dock repair works?（）
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