单项选择题
A.readily accessible B.securely stowed C.stored in sealed containers D.stowed with the emergency provisions
As you hold a piece of manila line vertically in front ...
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
An oxygen indicator can be used to determine if there i...
单项选择题An oxygen indicator can be used to determine if there is（）.
A.sufficient oxygen in a compartment to support life B.combustible gases present C.hydrogen gas present D.All of the above
An on-load release system on a survival craft means the...
单项选择题An on-load release system on a survival craft means the cable can be released（）.
A.only when the load is taken off the cable B.only when there is a load on the cable C.only when activated by the controls at the lowering station D.at any time
