单项选择题
As you hold a piece of manila line vertically in front of you，the strands run from the lower left to the upper right. Which type of line is this?（）
A.Right-hand laid B.Cable-laid C.Sennet-laid D.Water-laid
单项选择题 An oxygen indicator can be used to determine if there is（）.
单项选择题 An on-load release system on a survival craft means the cable can be released（）.
单项选择题 An effective braking system for windlasses on rigs in deep water is a(n)（）.
