World emergency day is coming, we should know about the first aid, I will be your first aid to the injured in the accident scene, the first to ensure the safety of the site, can not damage, second, ask the injured, to ensure that their breathing normal, third, to check the wound, if bleeding should be immediately taken to stop bleeding, and finally, if you need first aid, should ensure that the recovery is in my hope that these first aid knowledge can bring you help
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