1. Ordinary combustibles: These are materials that can easily ignite and burn, such as paper, wood, cloth, and rubber.
2. Flammable liquids and gases: These are liquids and gases that can easily ignite and burn, such as gasoline, propane, and natural gas.
3. Electrical fires: These are fires caused by electrical equipment and wiring that can ignite due to electrical faults, short circuits, and overloaded circuits.
4. Combustible metals: These are metals that can ignite and burn under certain conditions, such as magnesium, aluminum, and titanium.
5. Cooking oils and fats: These are oils and fats that can ignite and burn at high temperatures, such as vegetable oil and animal fats commonly used in kitchens.
6. Hazardous materials: These are materials that are capable of causing serious harm to people or the environment, such as chemicals, pesticides, and radioactive materials.
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