Question 343Safety & Environmental - Assistant Engineer

The correct answer is A) The agent may be applied in short bursts by opening and closing the squeeze nozzle piece No.1. This is correct because the illustration shows a portable fire extinguisher, likely a CO2 or dry chemical type, which is intended to be used by discharging the agent in short bursts to control the fire. Continuously discharging the entire contents may not be as effective. The other answer choices are incorrect - B) is wrong because the extinguisher should not be used on water-based fires, C) is incorrect as the extinguisher should be used from a safe distance, not at close range, and D) is false as there is a risk of reflash when using this type of extinguisher on Class B (flammable liquid) fires.