ISBN: 9787113174835 - 图解防止冒进信号安全措施 (1 risultati)

paperback. Condizione: New. Paperback. Pub Date :2013-10-01 Pages: 25 Language: Chinese Publisher: China Railway Publishing House graphic locomotive traffic safety measures 16: Graphic safety measures to prevent the rash signal follow illustrated. concise and practical. close to the scene. for workers The principles of writing. in the form of graphical exposition sixteen measures each provision. focused. easy to understand. easy to study and understand the maintenance system of cadres and workers to use safety risk mana.…