单项选择题
A.U-Type and posilok shackles B.C-Type and wedge shackles C.D-Type and bow shackles D.wedge and kenter shackles
The revolving drum of a winch used to haul lines is cal...
单项选择题The revolving drum of a winch used to haul lines is called a（）.
A.bull gear B.gypsyhead C.spanner D.wildcat
The purpose for the bag or box on top of some survival ...
单项选择题The purpose for the bag or box on top of some survival craft is to（）.
A.right the craft in case of capsizing B.increase area for radar detection C.act as a sail in case of a power loss D.steady the craft in heavy seas
The locking pin that joins the parts of a detachable li...
单项选择题The locking pin that joins the parts of a detachable link is held in position by（）.
A.a tack weld B.the self-locking characteristics of its taper C.a cotter pin D.a lead plug
