单项选择题
The Coordinator Surface Search（CSS）in a SAR situation should display by night（）.
A.Deck lights forward and aft B.A white light over two red lights C.A red light，white light，and blue light in a vertical line D.A distinctive signal promulgated by the CSS
单项选择题 Stop search and return to（）.
单项选择题 Please（）search and rescue.
单项选择题 MERSAR is replaced by（）.
