Isbn: 9787511144584 - 塔式起重机司机 (1 Ergebnisse)

paperback. Zustand: New. Paperback.Pub Date:2020-11-01 Pages:505 Language:Chinese Publisher:China Environment Publishing Group Tower Crane Driver is based on relevant laws and regulations on construction safety production. relevant standards and specifications for new safety technology of tower cranes and housing and urban and rural areas. The Ministry of Construction promulgated the Administrative Regulations on Special Construction Workers. Outline of Safety Technology Assessment for Special Construction Workers (T.…