管网布置必须保证供水安全可靠,宜布置成( ),即按主要流向布置几条平行干管,其间用连通管连接。 管网布置必须保证供水安全可靠,宜布置成( ),即按主要流向布置几条平行干管,其间用连通管连接。 分类:城市规划相关知识 题型:单选题 查看答案
It is implied but not stated in the passage that __________. It is implied but not stated in the passage that __________. 分类:城市规划相关知识 题型:单选题 查看答案