单项选择题
A.gained at right angles to the original course
B.gained in the direction of the original course
C.moved sidewise from the original course when the rudder is first put over
D.around the circumference of the turning circle
单项选择题 In a racetrack turn，to recover a man overboard，the vessel is steadied for the SECOND time after a turn of how many degrees from the original heading?（）
单项选择题 Immediately after abandoning a vessel，lookouts should be posted aboard liferafts to look for（）.
单项选择题 If，for any reason，it is necessary to abandon ship while far out at sea，it is important that the crew members should（）.