The sentence that emergency supplies have clear and unified classification standards and methods is wrong.
Emergency supplies refer to the safeguarding materials necessary in the process of emergency response to serious natural disasters, sudden public **** health incidents, public **** security incidents and military conflicts and other sudden public **** incidents. Generalized from a broad sense, all the materials used in the process of responding to emergent public **** events can be referred to as emergency materials.
Emergency supplies include protective gear, life saving, life support, rescue delivery, lighting equipment, communication and broadcasting, transportation, and transportation. Emergency supplies are those used in sudden public *** events. Protective supplies: protective clothing, gas masks, diving suits, helmets, armor, etc. Life aid: hemostatic bandages, life buoys, protective nets, stretchers and so on.
Life support: portable respirator, hyperbaric oxygen chamber, infusion equipment, anti-epidemic drugs, etc. Rescue transportation: isolation ambulance, medical lifeboat, parachute, ambulance, etc. Lighting equipment: flashlights, searchlights, emergency lights, etc. Communication and broadcasting: radio station, electric broadcasting vehicle, walkie-talkie, etc. Transportation: drawbridge, hovercraft, air-dropped aircraft, etc.
The stage at the level of the Logos, i.e., the stage before the formation of theories. But it is also thought that it is in a sense the last stage used again, because the result of applying other scientific methods to certain objects may be a new classification of those objects. In general, classification is from species to genus, while division is from genus to species.