单项选择题
A.Oil Rig chain and Oil Field Stud Link chain
B.Flash-butt welded chain and Di-Lok chain
C.Flash-butt welded chain and Oil Rig chain
D.Oil Field Stud Link chain and Flash-butt welded chain
单项选择题 The Vessel is a（）bulk carrier which is permitted to carry grain in bulk without requiring any fittings under the Rules of the 1974 International Safety of Life at Sea Convention.
单项选择题 The size of wire rope is determined by the（）.
单项选择题 The safest procedure used to rig a guy and preventer is to have the guy（）.