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?（）
A.60° B.135° C.180° D.360°
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（）.
单项选择题 If you see anybody fall overboard，act as follows except（）.
