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單項(xiàng)選擇題

Smoking in bed on a ship is prohibited（）.

A.at all times
B.during evening hours
C.unless another person is present
D.during drilling operations

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單項(xiàng)選擇題

Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.

A.shall
B.should
C.may
D.would

單項(xiàng)選擇題

Proper use shall be made（）radar equipment if fitted and operational.

A.of
B.to
C.on
D.with

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