A
Types of Fire Extinguishers
Fire extinguishers (灭火器) are marked according to the kind of fire on which they should be used. Using the wrong type of extinguisher can be dangerous and make things worse.
Type A extinguishers are used for fires on paper, cloth, wood, rubber, many plastics and so on. These types of fires usually leave ashes when they burn, so use Type A extinguishers for fires that leave ashes.
Type B extinguishers are used for burning liquids, such as oil, gasoline, and paints. These substances often come in barrel-shaped (桶形的) containers, so use Type B extinguishers for such barrels.
Type C extinguishers are used for electrical fires. Electricity travels in a circuit (电路), so use Type C extinguishers for circuits.
Remember, A is for Ashes, B is for Barrels, and C is for Circuits. Make sure you have the correct type of fire extinguisher before you try to use it.
Using a Fire Extinguisher
To help you remember how to use a fire extinguisher, learn PAPS. PAPS stands for Pull, Aim, Press, and Sweep.
Pull the pin (销) at the top of the extinguisher cylinder (圆筒).
Aim the nozzle (喷嘴) at the base of the fire.
Press the handle.
Sweep the spray (喷雾) from side-to-side at the fire’s base until it goes out.
21. The purpose of the text is to .
A. inform B. persuade C. entertain D. comment
22. What should you do before using a fire extinguisher?
A. Check whether it is in good condition.
B. Check whether you have chosen a right one.
C. Make sure you have an instructor beside you.
D. Make sure you have mastered the way to use one.
23. What does the underlined phrase “goes out” in the last paragraph mean?
A. Becomes bigger. B. Keeps shining.
C. Stops burning. D. Leaves a building.
