煤质化验工-煤炭行业特有工种职业技能鉴定实操培训推荐教材 - Tapa blanda

Coal quality testing station coal industry-specific types of vocational skills training to identify the practical operation of recommended textbooks(Chinese Edition)

paperback. Condición: New. Pub Date: 2014-12-01 Pages: 126 Language: Chinese Publisher: Coal Industry Press coal testing station coal industry to identify specific types of vocational skills training in the practical operation of recommended textbooks are coal quality testing work teaching and training content. including primary . intermediate and advanced workers need to master the theoretical knowledge and the primary. intermediate and advanced gymnastics training workers. Detailed knowledge. students can regulate un. Nº de ref. del artículo: CR069071

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