If the fire area for the supporting carbon dioxide fire extinguishers, valuable and sophisticated medical equipment, valuable drugs to extinguish the fire fighting, can be

Exam point: several commonly used fire extinguishers Principles and methods of extinguishing Topic: Chemistry and life Analysis: According to the carbon dioxide fire extinguishers in the pressurized liquid carbon dioxide compressed in a small cylinder, and then sprayed out of the fire, combined with the principle of extinguishing the fire, to analyze the answer. Carbon dioxide fire extinguishers in the pressurized liquid carbon dioxide compressed in a small cylinder, carbon dioxide fire extinguishers, from the storage container when sprayed, it will be rapidly vaporized by the liquid into a gas, and from the surrounding part of the heat absorbed, play a cooling effect; carbon dioxide gas can be excluded from the air and surrounded by the surface of the burning object or distributed in the more confined space, reduce the oxygen concentration around the combustible material or protection space The carbon dioxide gas can exclude air and surround the surface of the burning object or distributed in the more confined space, reduce the oxygen concentration around the combustible material or protective space, and produce asphyxiation and fire extinguishing. Comment: This question is not very difficult to understand the principle of carbon dioxide fire extinguishers is the key to correctly answer this question.