单项选择题
A towing vessel and her tow are severely restricted in their ability to change course. When making way，the towing vessel will show ONLY（）.
A.the masthead lights for a towing vessel B.the lights for a vessel restricted in her ability to maneuver C.sidelights，stern light，and towing light D.All of the above
单项选择题 A tow that is properly aligned to pass through a narrow opening between two bridge piers is （）.
单项选择题 A tow astern is veering from side to side on its towline. The best way of controlling the action is to（）.
单项选择题 A single vessel being towed alongside shall exhibit（）.
