[单选题]( )反映输电线路周围产生的电场效应。(每题 0.5分)（0.5）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69425' and id < 4495545 and id<>'4495545' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69425' and id > 4495545 and id<>'4495545' order by id asc limit 5