单项选择题
A measurement device for inspecting anchor chain is the().
A.slide rule B.go-no-go gauge C.derrick tape D.amp probe
单项选择题 A design modification of an anchor chain which prevents kinking is the().
单项选择题 A deck fitting,used to secure line or wire rope,consisting of a single body with two protruding horns is called a().
单项选择题 A contra-guide is a type of().