下列各项中既属于不定期清查，又属于局部清查的有（）。

A bridle for an ocean tow consists of ______.

A.two chains of equal length

B.a single nylon pendant rove through a heavy ring free to move on the pendant

C.two long legs of wire rope shackled to a fishplate

D.a single length of heavy chain with both ends secured on deck to welded pad eyes

An ocean towing bridle whose legs are of equal length，but too short，may ______.

A.fail to provide spring in the hawser

B.cause unequal distribution of the load to one leg

C.cause the bridle legs to jump clear of the chocks or fairleads

D.None of the above

An ocean towing bridle whose legs are equal length, but too short, may ______.

A.fail to provide spring in the hawser

B.cause unequal distribution of the load to one leg

C.cause the bridle legs to jump clear of the chocks or fairleads

D.None of the above

A.Trim the tow by the bow

B.Trim the tow by the stern

C.List the tow to windward

D.Adjust the length of the towing bridle

When being towed，a fairlead is a ().

A.Fabricated shape used to change the direction of a flexible member of the tow hookup

B.Fabricated shape used to secure the tow hookup to the towed vessel

C.Line connecting the fishplate to the bridle legs

D.Line connecting the tow bridle to the towed vessel

A. A cable clamp

B. A fishplate，flounder，or towing plate

C. A pad eye

D. The towing bitt

When towing，the least amount of tension will be on each bridle leg when the two legs ().

A.form. a large angle with each other

B.form. a small angle with each other

C.are of unequal length

D.are joined by a fishplate

One advantage of chain over wire rope for a tow bridle is that chain ______.

A.is better suited for inland towing

B.resists damage from chafing

C.handles more easily

D.equalizes towing forces better

A.The bridle to foul

B.The shorter leg to fail

C.Chafing on the fairlead or bitts

D.A bent swivel