【Daily Topic】【HVAC Version 20170428】
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Participation reward: 2 Wealth. Correct reward: 6 Wealth. Multiple-choice question: Self-cleaning flow rate refers to ( ). A. The minimum flow velocity required to ensure gravity-driven drainage. B. The flow velocity corresponding to the maximum designed flow rate for the drainage pipe section. C. The minimum flow velocity necessary to effectively wash away debris from the pipe walls and prevent suspended impurities from settling. D. The most economical flow velocity that allows effective cleaning of the pipe walls and prevents sedimentation of suspended impurities. C
C. The minimum flow rate that enables the removal of dirt from the pipe walls in a timely manner and prevents suspended impurities from settling
C. The minimum flow rate that enables the removal of dirt from the pipe walls in a timely manner and prevents suspended impurities from settling