单项选择题
A VESSEL，OTHER THAN A RESCUE UNIT，DESIGNATED TO CO-ORDINATE SURFACE SEARCH AND RESCUE OPERATION WITHIN A SPECIFIED AREA is known as（）.
A.Salving vessel B.Co-ordinator surface search C.MERSAR D.The vessel being salved
单项选择题 （）is not a search pattern.
单项选择题 （） is not a search manual.
单项选择题 （）is a/an aircraft used in SAR.
