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1. What hazardous materials class covers explosives?
2. What hazardous materials class covers flammable liquids?
3. What hazardous materials class covers gases?
4. What hazardous materials class covers radioactive materials?
5. What hazardous materials class covers corrosive materials?
6. What hazardous materials class covers poisons and toxic substances?
7. What hazardous materials class covers flammable solids?
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