单项选择题
What is NOT a securing system used on a containership?（）.
A.Lashing system B.Stacking system C.Locking system D.Buttress system
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? （）
单项选择题 With the buttress securing system，containers of different heights must be stowed（）.
