发布时间:2025-01-17 04:53:29
楼梯、扶手和踏步等应符合下列规定:
1 楼梯间应有直接的天然采光和自然通风;
2 楼梯除设成人扶手外,应在梯段两侧设幼儿扶手,其高度宜为0.60m;
3 供幼儿使用的楼梯踏步高度宜为0.13m,宽度宜为0.26m;
4 严寒地区不应设置室外楼梯;
5 幼儿使用的楼梯不应采用扇形、螺旋形踏步;
6 楼梯踏步面应采用防滑材料;
7 楼梯间在首层应直通室外。
水泵买错了,本来是要买自吸泵的,买成增压泵了,如果我把增压泵的叶轮换成自吸泵的叶轮。是不是就成自
2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29我有个民宿装修全包当时谈好价格126万结果在装修过程中说有些预算没算在内现在要加钱咋么办
2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29最近打算装修房子是商品房农村县城买的也没有什么钱这不能要买瓷砖嘛大概的尺寸都列了买要买多少瓷砖
2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29请结合已学知识分析日本鱼文化形成的原因并说说日本渔业目前面临的主要问题
2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29 2025-01-17 04:53:29