单项选择题
What is meant by spotting the boom?（）
A.Lowering it into a cradle B.Placing it in a desired position C.Spotting it with wash primer and red lead D.Two-blocking it
单项选择题 What is likely to occur when you are surging synthetic mooring lines on the gypsyhead during mooring operations?（）
单项选择题 Two types of anchor shackles which are currently available are（）.
单项选择题 The revolving drum of a winch used to haul lines is called a（）.
