A Class A fire extinguisher is designed to fight fires that involve ordinary combustible materials such as wood, paper, and cloth. 4. 禁止私拉电线：私拉电线是一种非常危险的行为，容易引发火灾。我们在使用电器时一定要遵守相关规定，不得私拉电线。

5. It uses water to douse the flames. A Class B fire extinguisher, on the other hand, is designed to fight fires that involve flammable liquids or gases we are aware of the potential dangers and take necessary precautions to prevent fires from occurring. In this article, we will discuss some basic fire safety knowledge and tips that can help keep you and your loved ones safe.

7. 禁止私自改装燃气设备：私自改装燃气设备是非常危险的行为，容易引起火灾和爆炸。

8. 注意用电安全：使用电器时要注意用电安全，不要长时间使用电器，避免电器过热引起火灾。

such as gasoline or propane. It uses foam to suffocate the flames. 不使用过期电器：电器是一种易燃物品，如果使用过期电器可能会引发火灾。我们在使用电器时一定要注意检查其有效期，并及时更换过期电器。