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【Daily Question】Utilities - Water Supply and Drainage - 20191211

2019-12-11View Original

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A building’s indoor fire hydrant system uses SN65mm hydrants, with hose lengths of 25 meters. If the hose bending reduction factor is 0.90 and the effective water column length of the nozzle is 10 meters, then the protection radius of the hydrant is (  ) meters. A. 35.0 B. 32.5 C. 32.1 D. 29.6 Answer: D

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