【Daily Question】Utilities - Water Supply and Drainage - 20200210
Thread Content
Which of the following statements regarding the combination types of internal drainage pipes in buildings is correct? ( ) A. A dual-pipe drainage system refers to a drainage system that has one sewage pipe and one wastewater pipe. B. A single-pipe drainage system can be equipped with a dedicated venting system. C. A system that uses only ordinary vent pipes constitutes a single-pipe drainage system. D. A single-pipe drainage system using special fittings refers to a drainage system in which ordinary vent caps are replaced by special fittings. Answer: C
D. The special fitting single-pipe drainage system refers to a drainage piping system in which special fittings are used in place of ordinary vent caps
This post was last edited by 1Hu Chunsheng39 on 2020-2-10 at 11:33 c