单项选择题
A.block used only with manila rope B.chock roller C.hinged block D.strong block used for short，sharp pulls
A shepherd’s crook is used to（）.A.lower spring buoys in...
单项选择题A shepherd’s crook is used to（）.
A.lower spring buoys into the water B.find an anchor after the buoy has been lost C.transfer a pennant wire to the anchor handling boat D.clean chain as it is hauled into the rig
A sheepshank is used to（）.A.keep a line from frayingB.j...
单项选择题A sheepshank is used to（）.
A.keep a line from fraying B.join lines of unequal size C.stop off a line D.shorten a line
A serving mallet is used in（）.A.covering wire or fiber ...
单项选择题A serving mallet is used in（）.
A.covering wire or fiber rope B.forcing fids into a line C.dogging hatches D.splicing lines
