單項(xiàng)選擇題Canvas sails，when not in use，may be damaged if（）.
A.left in the sunlight
B.stowed wet
C.folded frequently
D.washed with soap and water
您可能感興趣的試卷
你可能感興趣的試題
1.單項(xiàng)選擇題An ocean towing bridle should（）.
A.have equal legs of sufficient length
B.have a large angle between the legs
C.be formed on a bight of cable through a ring
D.never be made up of chain
2.單項(xiàng)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
3.單項(xiàng)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
4.單項(xiàng)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
5.單項(xiàng)選擇題A shroud is（）.
A.a light sail
B.a topmast stay
C.a sheet
D.standing rigging