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單項(xiàng)選擇題

Fire in the cabins. Close all fire doors and use the （）powder extinguisher.

A.dry
B.wet
C.foam
D.portable

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單項(xiàng)選擇題

After joining the ship, the crew members should be （）with their emergency duties.

A.know
B.familiarize
C.familiar
D.familiarity

單項(xiàng)選擇題

Take off fore and aft boat （）.

A.plugs
B.nests
C.davits
D.covers

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