ISBN: 9787502153168 - 送书签~9787502155537 测井仪修工（zz）/ 中国石油天然气集团公司人事服务中心 / 石油工业出版社 (1 resultados)

paperback. Condición: New. Paperback Pages Number: 258 Language: Chinese. Set of vocational skills certification questions: polymer preparation work prepared by the unified organization of the China National Petroleum Corporation personnel service center occupational skill appraisal questions set in a. The book contains the polymer preparation work junior workers. intermediate and advanced workers three levels of theoretical knowledge questions and skills operating questions is an essential book for polymer preparation.…