单项选择题
The plunger in the fuel injector pump, usually operated by a (), is driven up and down when working.
A.crankshaft
B.camshaft
C.piston rod
D.rack and pinion
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相关考题
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单项选择题
The pistons are cooled by oil supplied from the forced () system.
A.fresh water
B.sea water
C.lubrication
D.fuel oil -
单项选择题
The piston supporting body is mainly subjected to () stress.
A.pushing
B.centrifugal
C.stretch
D.compressive -
单项选择题
The piston rings if found worn out () and supplied by shipchandler.
A.must replace
B.must to be equipped
C.has to be repaired
D.have to be renewed
