單項(xiàng)選擇題

Post two lookouts with （）.

A.sextant
B.compass
C.radar
D.binoculars

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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

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