【Daily Topic】【HVAC Version 20160903】
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This post was last edited by hesonchang214 on 2016-11-9 at 15:40. Reward for participation: 2 Wealth. Reward for the correct answer: 9 Wealth. To prevent domestic drinking water from being contaminated by backflow, designs must comply with relevant standards, ensuring that there is a minimum air gap at the outlet of the water supply pipes above the overflow level of the water-using equipment ( ). A. It must not be smaller than the diameter of the water supply pipe at the distribution outlet. B. It must not be smaller than 1.5 times the diameter of the water supply pipe at the distribution outlet. C. It must not be smaller than 2.0 times the diameter of the water supply pipe at the distribution outlet. D. It must not be smaller than 2.5 times the diameter of the water supply pipe at the distribution outlet. Correct answer: D
To prevent potable water from being contaminated by backflow, the design must comply with relevant standards, ensuring a minimum air gap (D) at the water supply outlet above the overflow level of the water-using equipment. A. It must not be smaller than the diameter of the water supply pipe at the distribution outlet. B. It must not be smaller than 1.5 times the diameter of the water supply pipe at the distribution outlet. C. It must not be smaller than 2.0 times the diameter of the water supply pipe at the distribution outlet. D. It must not be smaller than 2.5 times the diameter of the water supply pipe at the distribution outlet
D. It must not be less than 2.5 times the diameter of the water supply pipe at the water distribution outlet
To prevent potable water from being contaminated by backflow, the design must comply with relevant standards, ensuring a minimum air gap (D) at the water supply outlet above the overflow level of the water-using equipment. A. It must not be smaller than the diameter of the water supply pipe at the distribution outlet. B. It must not be smaller than 1.5 times the diameter of the water supply pipe at the distribution outlet. C. It must not be smaller than 2.0 times the diameter of the water supply pipe at the distribution outlet. D. It must not be smaller than 2.5 times the diameter of the water supply pipe at the distribution outlet
D. It must not be less than 2.5 times the diameter of the water supply pipe at the water distribution outlet
To prevent potable water from being contaminated by backflow, the design must comply with relevant standards, ensuring a minimum air gap (D) at the water supply outlet above the overflow level of the water-using equipment. A. It must not be smaller than the diameter of the water supply pipe at the distribution outlet. B. It must not be smaller than 1.5 times the diameter of the water supply pipe at the distribution outlet. C. It must not be smaller than 2.0 times the diameter of the water supply pipe at the distribution outlet. D. It must not be smaller than 2.5 times the diameter of the water supply pipe at the distribution outlet