单项选择题
A.join two lines of different sizes B.join two lines of equal sizes C.add strength to a weak spot in a line D.act as a stopper to transfer a line under strain
The only wire rope termination which may be made in the...
单项选择题The only wire rope termination which may be made in the field is（）.
A.swaged socket B.thimbled mechanical splice C.hand splice D.spelter poured and resin sockets
Nylon line is better suited than manila for（）.A.Towing ...
单项选择题Nylon line is better suited than manila for（）.
A.Towing alongside B.Towing astern C.Holding knots and splices D.Resisting damage from chemicals
Neglecting friction，you desire to lift a 300 kgs weight...
单项选择题Neglecting friction，you desire to lift a 300 kgs weight with a stress on the hauling part of 100 kgs.Which of the following tackles would you use（）.
A.Gun tackle B.Luff tackle C.Two-fold tackle D.Double-luff tackle
