单项选择题
A.bight ring B.tow hook C.fishplate D.swivel
A term used to describe the dip in a towline that acts ...
单项选择题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
A solution to overcome tripping defects is an arrangeme...
单项选择题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
A shroud is（）.A.a light sailB.a topmast stayC.a sheetD....
单项选择题A shroud is（）.
A.a light sail B.a topmast stay C.a sheet D.standing rigging
