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Which statement about hydraulic ventilation is correct?

A. Hydraulic ventilation is relatively ineffective.
B. A fog stream is required.
C. Two hose lines are required.
D. Hydraulic ventilation is most effective with a smooth bore nozzle.

Answer :

Final answer:

The correct statement about hydraulic ventilation is that two hose lines are required. Hydraulic ventilation is a technique used in firefighting to remove smoke and heat from a building. It can be effective with various nozzle types, including smooth bore nozzles.

Explanation:

The correct statement about hydraulic ventilation is that two hose lines are required.

Hydraulic ventilation is a technique used in firefighting to remove smoke and heat from a building. It involves using high-pressure water streams to create a fog or spray pattern that can effectively ventilate the structure.

A fog stream is not necessarily required for hydraulic ventilation as other nozzle patterns can also be used depending on the situation. However, using a fog stream can be more effective in certain scenarios where greater dispersion of water droplets is needed.

Hydraulic ventilation can be effective with various nozzle types, including smooth bore nozzles. Smooth bore nozzles create a solid stream of water, which can penetrate deeper into the structure, reaching the seat of the fire more effectively.

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