单项选择题
A.cotton B.hemp C.manila D.sisal
The spray of water in low-velocity fog will have（）.A.gr...
单项选择题The spray of water in low-velocity fog will have（）.
A.greater range than high-velocity fog B.lesser range than high-velocity fog C.about the same range as high-velocity fog D.greater range than a solid stream
The splice designed to pass easily through a block is c...
单项选择题The splice designed to pass easily through a block is called a(n)（）.
A.eye splice B.short splice C.long splice D.block splice
The recessed areas on a wildcat are called（）.A.pawlsB.s...
单项选择题The recessed areas on a wildcat are called（）.
A.pawls B.sockets C.pockets D.devil's claws
