ISBN: 9787502145774 - 职业技能培训教程与鉴定试题集：注水泵工(下册),中国石油天然气集团公司人事服务中心,石油工业出版社9787502145774 (1 Ergebnisse)

paperback. Zustand: New. Paperback Pages Number: 340 Language: Chinese. Vocational skills training tutorials and identification of the questions set: injection pump workers (Vol.2) prepared by the Personnel Service Center of China National Petroleum Corporation. according to the national occupational standards for oil production workers. unified organization a vocational skills training tutorials and identification of questions set. The book includes the contents of the two levels of senior workers and technicians of.…