问题
单项选择题
（）are used for anchor gear in marine work where the chains must withstand the corrosive effects of seawater.
A.Chains
B.Wires
C.Ropes
D.Lines
答案
参考答案：A
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（）are used for anchor gear in marine work where the chains must withstand the corrosive effects of seawater.
A.Chains
B.Wires
C.Ropes
D.Lines
参考答案：A