单项选择题
A.A black ball that is hoisted when the ship anchors B.A buoy attached to the anchor C.A buoy attached to the scope of an anchor chain D.A mark of the number of fathoms in an anchor chain
What are the two main types of stud link chain（）.A.Oil ...
单项选择题What are the two main types of stud link chain（）.
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
The Vessel is a（）bulk carrier which is permitted to car...
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.
A.Self-loading B.Self-trimming C.Self-unloading D.Self-discharging
The size of wire rope is determined by the（）.A.number o...
单项选择题The size of wire rope is determined by the（）.
A.number of strands B.number of wires in each strand C.circumference D.diameter
