9787112226986 - 高处作业吊篮安装拆卸工雨欣图书 (1 Ergebnisse)
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paperback. Zustand: New. Language:Chinese.Paperback. Pub Date: 2019-02-01 Publisher: China Building Industry Press construction of special operations personnel are in housing construction and municipal construction activity. engaged in operations that may cause significant harm to himself. and the safety of others around the equ…ipment and facilities personnel. Ministry of Construction of special operations personnel need to be trained to take the examination certificate to posts. the agency is now a special operation.
