民用住宅厨房的烟道和厕所排气孔多为混凝土预制构件,施工时组装即可。这两种构件除规格尺寸有所不同外,组装方法基本相同。但有不少用户反应,上层厨房或厕所要闻到下层厨房和厕所很大的气 The chimneys and toilet vents of residential kitchens are mostly prefabricated concrete components that can be assembled during construction. The assembly methods are basically the same except that the two components are different in size. However, there are many users who responded that the upper kitchen or toilet had to smell the gas of the lower kitchen and toilet.