本刊从今年第1期起,在“电工考工指南”专栏连载的《中级电工考试复习题集》第9期基本刊载完毕,随后几期刊载了一组与电工考工紧密相联的基础知识,供读者学习、参考。应读者要求,为了便于广大电工复习考工知识和一般读者学习电工基础知识,本刊自1986年第1期 This issue from the first issue of this year in the “Electrical Engineering Guide” column serialized “intermediate electrical exam review questions set,” the basic issue of the ninth issue is completed, then published a group with the electrician examiner closely linked The basic knowledge for readers to learn, reference. At the request of the reader, in order to facilitate the majority of electricians to review the knowledge of the examiner and the general reader to learn the basics of electrician, this issue from 1986 No. 1