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The three major functions of heating, ventilation, and air conditioning are interrelated, especially with the need to provide thermal comfort and acceptable indoor air quality within reasonable installation, operation, and maintenance costs. HVAC systems can be used in both domestic and commercial environments.
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Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling. [2] [3] Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC). [4]
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In October 1925, local newspapers published an artist's impression of the planned theater's facade. The accounts promised a US$5 million cost as well as a "tropical garden" in the forecourt, complete with imported flowers, trees, and fish in ponds. [8] In contrast to early reports, the theater cost $2.1 million to construct.
The pig has a large head, with a long snout strengthened by a special prenasal bone and a disk of cartilage at the tip. [2] The snout is used to dig into the soil to find food and is an acute sense organ.