单项选择题
A qualified deck officer should be（）the watch.
A.In charge of B.Arranged C.Decided to D.The depth of
单项选择题 While the Pilot is maneuvering the vessel to a dock，what is the PRIMARY responsibility of the watch officer?（）
单项选择题 Which word indicates color variation in the characteristics of a light?（）
单项选择题 Which two components pass through the shank of an LWT anchor?（）
