衡量电能质量的具体指标是电压偏移.频率偏移和电压畸变率。（）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32638' and id < 2595299 and id<>'2595299' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32638' and id > 2595299 and id<>'2595299' order by id asc limit 5