單項選擇題

A snatch block is a（）.

A.block used only with manila rope
B.chock roller
C.hinged block
D.strong block used for short，sharp pulls

你可能感興趣的試題

單項選擇題

A smooth，tapered pin，usually of wood，used to open up the strands of a rope for splicing is called a(n)（）.

A.batten
B.bench hook
C.awl
D.fid

單項選擇題

A short splice in a line（）.

A.decreases the size of the line
B.should be used if the line is going through a block
C.should only be used in wire rope
D.doubles the size of the line

无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

A snatch block is a（）.

你可能感興趣的試題

A smooth，tapered pin，usually of wood，used to open up the strands of a rope for splicing is called a(n)（）.

A short splice in a line（）.

A smooth，tapered pin，usually of wood，used to open up the strands of a rope for splicing is called a(n)（）.