变压器差动保护防止励磁涌流的措施有（    ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69017' and id < 4467182 and id<>'4467182' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69017' and id > 4467182 and id<>'4467182' order by id asc limit 5