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單項(xiàng)選擇題

A port is（）if the delay in leaving it would be such as to frustrate the adventure．

A.not good
B.unsafe
C.safe
D.obtainable

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單項(xiàng)選擇題

A port（）if more than ordinary prudence and skill is needed to avoid exposure to danger there.

A.safety
B.is safe
C.is not safe
D.is not safety

單項(xiàng)選擇題

A mortgagee only（）entitled to all the freight which the ship is in the course of earning，when his possession of the ship comes into being.

A.sustains
B.maintains
C.becomes
D.has

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