单项选择题
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use?（）
A.Drape along brackets B.Hang vertically in a sheltered area C.Stow in bins at hatch coming side D.All of the above
单项选择题 How can you estimate the position of a tropical storm’s center?（）
单项选择题 How can the Coast Guard determine that a crew member is “able to understand any order spoken by the officers”?（）
单项选择题 How are riveted lap joints made watertight?（）
