单项选择题
The knot used to join two lines or two large hawsers for towing is called a（）.
A.square knot B.carrick bend C.sheet bend D.bowline
单项选择题 The knot used to join two lines of different diameter is a（）.
单项选择题 The knot at the end of the heaving line used to pass the towing hawser is called a（）.
单项选择题 he heel block is located（）.
