单项选择题
The port in which crew or passengers go on board the ship is called（）.
A.port of call B.port of embarkation C.port of destination D.port of disembarkation
单项选择题 The principal purpose of adjustment of the magnetic compass is to eliminate（）as far as possible.
单项选择题 The routing system which aimed at reducing the risk of casualties is called as（）.
单项选择题 The ship has a list of 5 degrees（）starboard.
