单项选择题
The safest device used to secure the end of the pendant wire when it is initially passed to the anchor handling vessel is a（）.
A.pelican hook B.hydraulic deck stopper C.connecting link D.shackle
单项选择题 The purpose of the stripping bar on an anchor windlass is to（）.
单项选择题 The Pilotage-quarantine anchorage，（）between Damen Dao and Qingshan Dao，is defined by the lines（）the given points.
单项选择题 The most doubtful and unpredictable factor in a mooring system is the（）.
