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單項選擇題

Vessels should maintain a sharp lookout，especially during December through March，when navigating the right whale’s only known calving grounds which lie off the coasts of（）.

A.Nova Scotia
B.Maine and Massachusetts
C.Georgia and NE Florida
D.California and Mexico

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單項選擇題

Vessel engaged in the launching or recovery of aircraft is called（）．

A.A vessel restricted in her ability to maneuver
B.A vessel not under command
C.A vessel constrained by her draught
D.A vessel not under way

單項選擇題

Underway at night，a vessel displaying the lights shown is（）.

A.Engaged in fishing
B.Mine sweeping
C.A pilot boat
D.Under sail

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