单项选择题
The securing systems for containers were developed to prevent container movement during which ship motion?（）.
A.Surge B.Roll C.Sway D.Yaw
单项选择题 What is NOT a securing system used on a containership?（）.
单项选择题 What purpose does a bridge fitting serve when lashing containers?（）.
单项选择题 Which statement concerning the lashings of containers with solid bar or wire rope lashings is TRUE? （）
