单项选择题
A.It is imperative that the securing of cargo on flats and trailers and in containers be adequate for both road and sea motions
B.The movements experienced by road borne cargo differ significantly from the roll and sway movements of a ship at sea
C.It is necessary for adequate number and strength of securing points on the vehicles themselves in order that lashings may be properly and safely utilized.
D.All the above
单项选择题 Which of the following is/are TRUE regarding lashing requirements to secure vehicles aboard Ro-Ro vessels? （）
单项选择题 Which of the following is the stated proper sequence before commencing cargo operations aboard Ro-Ro vessels?（）
单项选择题 Which of the following is suitable for bagged cargo?（）.