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單項(xiàng)選擇題

Vessel towing with the current shall（）tow more than two boats and they must be towed alongside.

A.at times
B.at any time
C.at no time
D.at moment

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單項(xiàng)選擇題

Vessels are required to illuminate their（）to aid identification.

A.funnels
B.tunnels
C.channels
D.handles

單項(xiàng)選擇題

Vessels ramaining（）a few hours should moor with anchors.

A.much than
B.more than
C.many than
D.lot than

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