单项选择题
While underway in thick fog you are on watch and hear the cry“man overboard”.Which type of maneuver should you make（）.
A.Figure eight turn B.Round turn C.Racetrack turn D.Williamson turn
单项选择题 What is the BEST conductor of electricity（）.
单项选择题 The officer in charge of the navigational watch shall not hand over the watch to the relieving officer if（）.
单项选择题 The Master to prosecute all voyages with the utmost（）and to render customary assistance with the Vessel’s Crew.
