单项选择题
A towing light is（）.
A.shown below the stern light B.white in color C.displayed at the masthead D.a yellow light having the same characteristics as the stern light
单项选择题 A towing light is（）.
单项选择题 A towing hook may be released from the（）.
单项选择题 A tow that is properly aligned to pass through a narrow opening between two bridge piers is “ （）”.
