ISBN: 9787502118686 (1 résultats)

paperback. Etat : New. Paperback Pages Number: 226 Language: Chinese. In order to improve the quality of the oil workers. to meet the needs of the oil workers 'training and assessment. prepared by the China National Petroleum Corporation. the Labour Bureau of the set of workers of the oil workers' technical level training materials level of training materials. Set of teaching materials according to the state issued the workers' standard of technical grade and the Corporation Labour Office organized the oil workers . …