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

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单项选择题

A.Williamson Turn
B.Parallel
C.Sector
D.zig-zag maneuver

单项选择题

A.MERSAR
B.IMOSAR
C.ICAO SAR
D.SOSREP