單項(xiàng)選擇題A hook that will release quickly is a().

A.longshore hook
B.margin hook
C.marginal hook
D.pelican hook


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1.單項(xiàng)選擇題A figure eight knot is used to().

A.be a stopper
B.shorten a line
C.join lines of equal size
D.keep a line from passing through a sheave

2.單項(xiàng)選擇題A fiber rope can be ruined by dampness because it may().

A.rot
B.shrink
C.stretch
D.unlay

3.單項(xiàng)選擇題A chock is a().

A.deck fitting used to secure mooring lines
B.casting fitted at the side of a weather deck,used as a fairlead
C.sharp block of wood used to support hygroscopic cargo
D.smoke pipe for the galley stove

4.單項(xiàng)選擇題After splicing an eye in a piece of wire rope,the splice should be parceled and served to().

A.strengthen the line
B.increase its efficiency
C.prevent hand injury by covering loose ends
D.make the line more flexible

5.單項(xiàng)選擇題A chock().

A.is a deck fitting used to shackle gear to the deck
B.permits easy jettisoning of deck cargo in an emergency
C.prevents stress concentration in the bulwark
D.provides openings through the bulwark for mooring lines