单项选择题
The strongest of the natural fibers is（）.
A.cotton
B.hemp
C.manila
D.sisal
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相关考题
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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 -
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 -
单项选择题
The recessed areas on a wildcat are called（）.
A.pawls
B.sockets
C.pockets
D.devil's claws
