Foam fire extinguishers cannot be used to extinguish fire A. Plastic B. Gasoline C. Kerosene D.

Foam fire extinguisher.

Can not be used for saving (d, metal sodium.

Fire. It can be used to extinguish Class A fires, such as fires caused by the burning of solid substances such as wood and cotton; It is most suitable for fighting Class B fires, such as gasoline, diesel and other liquid fires; Water-soluble flammable and flammable liquids cannot be extinguished.

fires (such as alcohols, esters, ethers, ketones and other substances) and Class E (electrified) fires.

This type of fire extinguisher is a chemical reaction that occurs by mixing an acidic solution with an alkaline solution in the cylinder.

The generated foam is pressed out of the nozzle and sprayed out to extinguish the fire.

In addition to being used to extinguish general solid matter fires, it can also extinguish fires of flammable liquids such as oil, but cannot extinguish fires caused by live equipment and organic solvents such as alcohols, ketones, esters, and ethers.

d.Sodium metalThe carbon dioxide and water-based foam emitted by the foam fire extinguisher react with sodium metal! Cause the fire to be bigger!

Foam fire extinguisher.

1. It can be used to extinguish Class A substances such as wood, cotton, fabric, paper and other initial disasters.

2. It can also be used to extinguish Class B substances such as gasoline, kerosene, vegetable oil and other initial disasters.

3. The anti-soluble foam fire extinguisher can extinguish the fire of polar solvents such as alcohol, ketones, lipids, aldehydes, ethers, etc.

4. It is not possible to extinguish the fire of live equipment.

A plastic, look. B, C, and D cannot be extinguished with a foam fire extinguisher, so choose A.

d。Sodium metal is chemically active and oxidation can occur at room temperature.

Foam fire extinguishers cannot be used to extinguish (d, sodium metal) fires.

It can be used to extinguish Class A fires, such as fires caused by the burning of solid substances such as wood and cotton; It is most suitable to fight Class B fires, such as gasoline, diesel and other liquid fires; It cannot extinguish fires of water-soluble flammable and flammable liquids (such as alcohols, esters, ethers, ketones and other substances) and Class E (electrified) fires.

This type of fire extinguisher is a chemical reaction that mixes the acidic solution and the alkaline solution in the cylinder, and the generated foam is pressed out of the nozzle and sprayed out to extinguish the fire.

In addition to being used to extinguish general solid matter fires, it can also extinguish flammable liquids such as oil and fires, but cannot extinguish fires caused by live equipment and organic solvents such as alcohols, ketones, esters, and ethers.

Foam fire extinguishers cannot extinguish fires with water-soluble flammable and flammable liquids (such as alcohols, esters, ethers, ketones and other substances) and Class E (electrified) fires. Because the foam sprayed by the foam fire extinguisher contains moisture, it can react with organic substances such as alcohol, esters, ethers, ketones, etc., and is a conductor of electricity, so it cannot be used to extinguish these two types of fires.

Foam fire extinguishers are mainly used to extinguish fires.

1. According to the fire extinguishing principle of foam fire extinguisher, it can be used to extinguish Class A fires, such as fires caused by the combustion of solid substances such as wood and cotton. The combustion of these solids does not react with the substances in the foam fire extinguisher, and the flame can be quickly extinguished as long as the air is isolated from contact with the solids.

2. The most suitable foam fire extinguisher is to extinguish Class B fires, such as gasoline, diesel and other liquid fires, carbon dioxide can collapse to reduce the temperature of gasoline and diesel, so that it is lower than the required temperature of the ignition point, and can isolate the air and quickly extinguish the flame.

To extinguish combustible gas fires, use dry powder fire extinguishers to extinguish the fire.

Dry powder fire extinguishers can extinguish general fires, and can also extinguish fires caused by the combustion of oil, gas, etc. Dry powder fire extinguisher oak uses carbon dioxide gas or nitrogen gas as the power to spray the dry powder in the cylinder to extinguish the fire. Dry powder is a dry, easy-to-flow fine solid powder, composed of a base material that can extinguish fires and additives such as moisture-proof agents, flow accelerators, and anti-caking agents.

Dry powder fire extinguishers are mainly used to extinguish the initial fire of flammable liquids such as petroleum and organic solvents, combustible gases and electrical equipment. It is widely used in oil fields, oil depots, refineries, chemical plants, chemical warehouses, ships, airports and industrial and mining enterprises.

The most commonly used opening method for dry powder fire extinguishers is the pressure base method. After lifting the fire extinguisher to the appropriate position from the fire source, first turn it upside down several times to loosen the dry powder in the cylinder, and then let the nozzle be aimed at the most violent burning, pull out the safety pin, press down the pressure handle, and the fire extinguishing agent will be sprayed out to extinguish the fire.

Foam fire extinguishers cannot be used to extinguish water-soluble flammable or flammable liquids, and Class E fires. Fires caused by alcohols, esters, ethers, and other substances are known as fires of water-soluble flammable and flammable liquids. Category E fires refer to fires caused by electrically charged objects and precision instruments.

Foam fire extinguishers cannot be used to extinguish fires with water-soluble flammable and flammable liquids and live fires per acre. Remember not to tilt or move the foam fire extinguisher when it does not reach the fire source. When about 10 meters away from the fire source, pull out the safety bolt, then turn the fire extinguisher upside down, hold the lifting ring with one hand, hold the bottom ring of the cylinder with the other hand, and spray at the source of the fire.

The foam fire extinguisher is a chemical reaction that mixes the acidic solution and the alkaline solution in the cylinder, and presses the generated foam out of the nozzle and sprays it out to extinguish the fire.