The best system of artificial ventilation is:
AAir coolers
BAir conditioning
CCeiling fans
DPropeller type fans
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Related Questions:
Ordinary windows is technically known as
The vertical sides of door and window openings provided in a wall are known as
Exposed portions of a vertical surface at right angles to window frame, are known as
Vertical sides of opening of doors and windows are:
Louvers are fixed at an angle of