单项选择题
A.fishing
B.in distress
C.at anchor
D.not under command
单项选择题 A vessel showing a yellow light over a white light at night is a vessel（）.
单项选择题 A vessel shall，so far as practicable，（）traffic lanes.
单项选择题 A vessel is approaching from dead ahead.Both of her sidelights are visible and her range lights are in line.Which of the following could you do first（）.