单项选择题
A.chain locker B.fairlead C.anchor D.contact point of chain with seabed
By regulation，life preservers aboard an uninspected tow...
单项选择题By regulation，life preservers aboard an uninspected towing vessel must be（）.
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
