concert 发表于 2025-3-25 04:36:57
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http://reply.papertrans.cn/35/3441/344034/344034_28.png痛得哭了 发表于 2025-3-26 13:07:57
http://reply.papertrans.cn/35/3441/344034/344034_29.pngMawkish 发表于 2025-3-26 20:21:38
https://doi.org/10.1007/978-3-031-40885-4these estimated figures for each group the range is great — from about 15 per cent for some repair and maintenance and some new civil engineering work to probably 75 per cent for some new building work involving a high proportion of expensive components.