单项选择题
A tow that is properly aligned to pass through a narrow opening between two bridge piers is （）.
A.on course B.headed fair C.holding on D.in shape
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（）.
单项选择题 A reaching course is one in which the wind（）.
