Answer :
Final answer:
Mechanical ventilation is the most effective type of ventilation for clearing contaminated structures of smoke.
Explanation:
The most effective type of ventilation for clearing contaminated structures of smoke is Mechanical ventilation. Mechanical ventilation uses mechanical systems such as fans or blowers to force fresh air into a building and expel smoke and other contaminants. It is the preferred method for quickly removing smoke and improving air quality in emergency situations.
For example, smoke exhaust systems with powerful fans can create a pressure difference that forces smoke to exit a building, allowing fresh air to enter. Mechanical ventilation can be especially important in large structures or buildings with complex layouts where natural ventilation may not be sufficient.
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