ISBN 10: 7563643141 ISBN 13: 9787563643141
Seller: liu xing, Nanjing JiangSu, JS, China
paperback. Condition: New. Paperback. Pub Date:2015-01-01 Pages:164 Language: Publisher: Chinese China University of Petroleum press book book is designated national refrigeration occupation skill appraisal appraisal. occupation qualification training and identification for the intermediate refrigeration. This book is based on the national occupation skill standard. closely linked to the national database elements in the identification of the identification list.