单项选择题
A.decreases the size of the line B.should be used if the line is going through a block C.should only be used in wire rope D.doubles the size of the line
A sail hook is used for（）.A.hoisting a windsailB.parcel...
单项选择题A sail hook is used for（）.
A.hoisting a windsail B.parcelling C.sewing canvas D.testing canvas
A rolling hitch can be used to（）.A.make a temporary eye...
单项选择题A rolling hitch can be used to（）.
A.make a temporary eye B.mouse a hook C.secure a line around a spar D.shorten a line
A J-chaser is used to（）.A.transfer a pennant wire to th...
单项选择题A J-chaser is used to（）.
A.transfer a pennant wire to the anchor handling vessel B.clean chain as it is hauled into the rig C.lower spring buoys into the water D.retrieve an anchor after the buoy has been lost
