单项选择题
A 6x12，two-inch wire rope has（）.
A.12 strands and a two-inch diameter B.12 strands and a two-inch circumference C.6 strands and a two-inch diameter D.6 strands and a two-inch circumference
单项选择题 A “sheepshank” is used to（）.
单项选择题 （）provide athwartship support for the mast or king posts.
单项选择题 （）are used for anchor gear in marine work where the chains must withstand the corrosive effects of seawater.
