单项选择题
In a traffic separation scheme, when joining a traffic lane from the side, a vessel shall do so（）.
A.at as small an angle as possible B.as nearly as practical at right angles to the general direction of traffic flow C.only in case of an emergency or to engage in fishing within the zone D.never
单项选择题 In a traffic separation scheme, when joining a traffic lane from the side, a vessel shall do so（）.
单项选择题 In a weather report, position good means that the position is（）.
单项选择题 In a weather report,Z stands for（）.
