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"Drinking water fountains, single orifice not greater than 7/16 inch in diameter or multiple orifices with a total area of 0.150 square inch (area of circle 7/16 inch in diameter) that are away from a wall require a minimum air gap distance in inches of ____________. A. 1 B. 1.5 C. 2 D. 3 E. Two times the diameter of the effective opening!"
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