单项选择题
A.sailing
B.proceeding
C.anchoring
D.maneuvering
单项选择题 A vessel using a traffic separation scheme is forbidden to（）.
单项选择题 A vessel using a traffic separation scheme shall normally join or leave a traffic lane at the （）of the lane.
单项选择题 A vessel using a traffic separation scheme shall so far as practicable（）a traffic separation line or separation zone.