A.there is a risk of collisionB.you are the give-way ve……

单项选择题A vessel（）when underway shall so far as possible，keep out of the way of a vessel not under command.

A.having engaged in fishing
B.engaging in fishing
C.engaged in fish
D.engaged in fishing

单项选择题A vessel being pushed ahead is required to carry which of the following lights?（）.

A.Sidelights and a stern light
B.Sidelights only
C.Sidelights and a small white light at each end
D.A small white light at each end

单项选择题In determining if risk of collision exists，if there is any doubt，such risk shall be deemed to（）.

A.exist
B.exists
C.existing
D.to be existed

单项选择题A vessel being towed astern shall show at night（）.

A.the lights required for a power-driven vessel underway
B.only the required masthead lights
C.a sternlight only
D.sidelights and a sternlight

单项选择题A vessel crossing a river on the Western Rivers has the right of way over（）.

A.vessels ascending the river
B.vessels descending the river
C.all vessels ascending and descending the river
D.None of the above