單項選擇題A tow bridle is attached to the main tow hawser at the（）.
A.bight ring
B.tow hook
C.fishplate
D.swivel
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1.單項選擇題A term used to describe the dip in a towline that acts as a shock absorber is（）.
A.catenary
B.step
C.shock dip
D.bight
2.單項選擇題A solution to overcome tripping defects is an arrangement of special plates on either side of the flukes，designed to set them in the correct tripping position. These special plates are called（）.
A.trippers
B.stocks
C.stabilizers
D.palms
3.單項選擇題A shroud is（）.
A.a light sail
B.a topmast stay
C.a sheet
D.standing rigging
4.單項選擇題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
5.單項選擇題A preventer guy（）.
A.prevents anyone from working the cargo at unauthorized times
B.is a safety measure in case one of the outboard guys parts
C.is a longshoreman who watches for accidents
D.is the same as a blacksmith