【Daily Question】Utilities - Water Supply and Drainage - 20200131
Thread Content
Which of the following statements regarding the combination types of internal drainage pipes in buildings is correct? ( ) A. A double-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 with special fittings refers to a drainage system in which special fittings are used in place of ordinary vent caps. Answer: C
C. A system that only features a conventional vent pipe system belongs to a single-pipe drainage system