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單項(xiàng)選擇題

The type of extinguisher which should be used for an electricity fire is（）.

A.foam or soda acid
B.dry chemical or foam
C.carbon dioxide or dry chemical
D.carbon dioxide or foam

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單項(xiàng)選擇題

The vessel on opposite course will（）on your port side.

A.pass
B.overtake
C.catch up
D.run down

單項(xiàng)選擇題

The vessel was drifted off from her（）due to strong wind.

A.course
B.track
C.direction
D.trend

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