单选题On receipt of a distress alert, the SAR units ashore and at sea will（）soonest.Acoordinate in rescue operationBsend rescue vesselsCreach the area at onceDconduct a sector search
单选题
On receipt of a distress alert, the SAR units ashore and at sea will（）soonest.
A
coordinate in rescue operation
B
send rescue vessels
C
reach the area at once
D
conduct a sector search
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