Question

Portion of ventilations systems found in underground stations, consisting of air ducts terminating under the platforem at track level and the surfaces?

Answer 1

The portion of ventilation systems found in underground stations is called the ventilation system.

Step-by-step explanation:

The portion of ventilation systems found in underground stations, consisting of air ducts terminating under the platform at track level and the surfaces, is called the ventilation system. It is an essential part of underground stations to maintain air quality and circulation.