A.chromium-plate against wear
B.anti-corrosion treated
C.white metal lined against wear
D.flame hardened against wear
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A.to revolve
B.revolved
C.revolving
D.to be revolved
A.crankshaft
B.connecting rod
C.cross-head
D.main beating
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.a sump tank
B.a feed well
C.a double bottom tank
D.a drain tank
A.fresh water
B.sea water
C.lubrication
D.fuel oil
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Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
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