單項選擇題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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1.單項選擇題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

2.單項選擇題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
C.examining tank boundaries
D.checking fuel oil strainers

3.單項選擇題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

4.單項選擇題Waste oil from the lube oil sumps of machinery may NOT be （）.

A.drained into the vessels bilges
B.reclaimed for other uses
C.held in a slop tank
D.purified and then reused

5.單項選擇題Portable carbon dioxide fire extinguishers should be sent ashore to be recharged （）.

A.when the remaining charge volume is less than 90 percent of the required VOLUME
B.at each inspection for certification
C.at each annual inspection
D.when the weight loss exceeds 10% of weight of charge