[单选题]装设分段电抗器的作用是(  )。(每题 1分)（0.5）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69429' and id < 4496205 and id<>'4496205' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69429' and id > 4496205 and id<>'4496205' order by id asc limit 5