单项选择题
The key to rescuing a man overboard is（）.
A.Good communication B.A dedicated crew C.Good equipment D.Well-conducted drills
单项选择题 The indication of a slipping anchor is a（n）（）.
单项选择题 The Coordinator Surface Search（CSS）in a SAR situation should display by night（）.
单项选择题 Stop search and return to（）.
