发布时间:2025-01-31 10:23:41
有张图纸是里立面图,图纸分建施和结施两种,结施是看钢筋的,立面图是在建施图纸里面的。有个整个房屋的里面,边上就有标注层高。
举例说明人们在日常生活中防止铁生锈方法至少三种并且说明其中的科学
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