单项选择题
Kapok life jackets should NOT be（）.
A.stowed near open flame or where smoking is permitted B.used as seats，pillows，or foot rests C.left on open decks D.All of the above
单项选择题 It is permissible to place an eye splice in wire rope used as cargo gear providing the splice is made using（）.
单项选择题 Is it safe（）a rocket?
单项选择题 Instead of whipping an end of a line，a temporary means of preventing the line from unraveling is to tie a（）.
