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Extraction code: 1234 This book is compiled according to the latest electric teaching syllabus issued by the Ministry of Education, and refers to the professional skill appraisal standards of the industry and the production technical requirements of modern enterprises. It integrates the basic theory and practice of electricity. The book is divided into seven chapters, which mainly introduce electrostatic field, DC circuit, electromagnetic field, AC circuit, transmission and distribution safety, analog electronic circuit and digital electronic circuit. Each section has "observation and exploration" and "basic knowledge"