单项选择题
Which one of the followings is not required on survival crafts?（）
A.Anti-seasickness medicine B.Immersion suits C.Axes D.Lifebuoys
单项选择题 Who is responsible for the voyage plan?（）
单项选择题 What is the direction of rotation of tropical cyclones,tropical storms and hurricanes in the Northern Hemisphere?（）
单项选择题 What is the requirement of a navigator who used an ECDIS?（）
