单项选择题
The canopy of an inflatable liferaft should（）.
A.go into place as the raft is inflated B.be put up after everyone is aboard C.be put up only in severe weather D.be used as a sail if the wind is blowing
单项选择题 Kapok life jackets should NOT be（）.
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?
