单项选择题
On your vessel，a wire rope for the cargo gear shows signs of excessive wear and must be replaced. In ordering a new wire for this 10-ton boom，what safety factor should you use?（）
A.Three B.Five C.Six D.Seven
单项选择题 On an anchor windlass，the wheel over which the anchor chain passes is called a（）.
单项选择题 On a long ocean tow，the bridle should be made up of two equal lengths of（）.
单项选择题 On a light tow，what could you substitute for a fishplate?（）
