零序电流补偿系数为（ ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69480' and id < 4501485 and id<>'4501485' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69480' and id > 4501485 and id<>'4501485' order by id asc limit 5