石油石化职业技能鉴定试题集:防腐绝缘工 - Tapa blanda

Petroleum and petrochemical Occupational Skill Testing Question set: anti-corrosion. insulation workers(Chinese Edition)

paperback. Condición: New. Language:Chinese.Paperback Pages Number: 292 petroleum and petrochemical Occupational Skill Testing Question set: anti-corrosion insulation workers by the China National Petroleum Corporation Occupational Skill Testing Guidance Center in accordance with anti-corrosion insulation workers vocational qualification level standards. preparation of the unified organization of the petroleum and petrochemical Occupational Skill Testing questions set in a. Petroleum and petrochemical Occupational Skil. Nº de ref. del artículo: MY9577

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