单项选择题
Never（）stowed like this.
A.optional cargo should be B.should optional cargo be C.should be optional cargo D.should optional cargo
单项选择题 0f the following, the most important consideration for a tank vessel is（）.
单项选择题 0f the general methods of stowing bagged cargo, which allows maximum ventilation?（）.
单项选择题 0il product samples should be taken from the（）.
