单项选择题
The device used for preventing the passage of flames into enclosed spaces is called a （）.
A.flame relief valve
B.flame stopper
C.safety valve
D.flame arrester
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Your vessel has run aground and upon taking fuel oil tank soundings, you find that a fuel tank level has increasedYou therefore should suspect （）.
A.condensation in the fuel tank
B.a crack in the hull portion of the fuel tank
C.a load of bad fuel
D.contamination from the saltwater flushing system -
单项选择题
Following a grounding, you can best determine that a SLACK fuel oil tank has been holed by （）.
A.sounding the tank
B.waiting for the vessel to list
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Bilges may be pumped （）.
A.on the outgoing tide
B.overboard after dark
C.overboard through an oily water separator
D.anytime in an emergency, i-emain engine lube oil failure
