单项选择题
How are lifelines attached to a life float?()
A.By serving B.By splicing one end of the line around the apparatus C.Securely attached around the outside in bights no longer than three feet D.With an approved safety hook or shackle
单项选择题 Faking a line means to().
单项选择题 Canvas sails,when not in use,may be damaged if().
单项选择题 An ocean towing bridle should().