A vessel being towed astern shall show at night（）.

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A vessel approaching your vessel from 235°relative is in what type of situation?（）.

A.Meeting
B.Overtaking
C.Crossing
D.Passing

单项选择题A vessel approaching a narrow channel shall（）.

A.avoid crossing the channel if it impedes another vessel navigating in the channel
B.not overtake any vessels within the channel
C.keep as close as possible to the edge of the channel on her port side
D.anchor only in the middle of the channel

单项选择题A vessel aground at night is required to show two red lights in a vertical line as well as （）.

A.not under command lights
B.restricted in her ability to maneuver lights
C.anchor lights
D.sidelights and a sternlight

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