paperback. Condition: New. Paperback. Pub Date: 2011 Pages: 259 Language: English Publisher: Chemical Industry Press Electrical and Electronic Technology full schematic diagrams of Series: electrician knowledge Figure crash (with 50 yuan learning graphic card) content skills Quick & rdquo ; full graphic features. based on the electrical characteristics of the knowledge map. combined with the actual work requirements of the knowledge map. detailed the knowledge and skills needed by the electrician knowledge map. include.