Question

1. when using a fire extinguisher, always aim for the top of the flame, that will help to cool down the flame, so it is easier to extinguish. true false 2. in an event of a fire, elevators are not as safe as a stairway. true false 3. what are the two types of smoke detection technologies? ionization and photogenetic oxidation and photoelectric ionization and photoelectric none of the above 4. carbon dioxide fire extinguishers are designed for which types of fuels? class b and c classes a, b, and c class a and c class d and a

Explanation:

1. When using a fire extinguisher, one should aim at the base of the flame, not the top, to cut off the fuel - oxygen contact. So the statement is false.
2. In a fire, elevators can malfunction due to power outages, smoke, or heat, while stairways are a safer means of escape. So the statement is true.
3. The two main types of smoke - detection technologies are ionization and photoelectric.
4. Carbon dioxide fire extinguishers are designed for Class B (flammable liquids) and Class C (energized electrical equipment) fires.

Answer:

1. B. False
2. A. True
3. C. Ionization and Photoelectric
4. A. Class B and C