问题
单项选择题
What is NOT suitable for use in making up the towing rig for a heavy，long ocean tow?（）
A.Chain
B.Ring
C.Solid thimble
D.A fishplate
答案
参考答案：B
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What is NOT suitable for use in making up the towing rig for a heavy，long ocean tow?（）
A.Chain
B.Ring
C.Solid thimble
D.A fishplate
参考答案：B