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單項(xiàng)選擇題

Decks, superstructure and hand rails may be washed with （）water at sea.

A.sea
B.ballast
C.fresh
D.cement

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單項(xiàng)選擇題

The sailor keeping （）watch should clean the gangway, the rails, bulwark and the spaces around the gangway.

A.navigation
B.gangway
C.port
D.anchor

單項(xiàng)選擇題

The sailor taking （）watch should do cleaning work on the bridge.

A. 0 to 4
B. 4 to 8
C. 8 to 12
D. 12 to 16