A、A.agent
B、B.shipchandler
C、C.surveyor
D、D.engineer
更多“This used piston had been tested and approved as a spare part by the （） during last annual repair.”相关的问题
A、A.the same piston B、B.the piston nearby C、C.the other pistons D、D.the generators on board
A、doesnt use a drain tank but a head tank B、uses a drain tank not head tank C、uses a drain tank and a head tank D、uses neither a drain tank nor a head tank
A、wide compression rings are used B、oil rings are located above the piston C、chromium plating is used on all piston rings D、oil rings are located near the bottom of the piston skirt
A、transfer heat from the cylinder to the piston B、scrape oil from the sides of the piston C、seal the combustion space from the crankcases D、prevent any piston contact with the cylinder liner
A、air filtration is inadequate B、engine coolant leaking into the lube oil C、fuel oil is leaking into the lube oil D、the piston rings are excessively worn
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