单项选择题
What best describes an anchor buoy（）.
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
单项选择题 What are the two main types of stud link 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（）.
