输电线路长，线路故障几率较大，变压器不需要经常切换时，应采用（  ）接线。 

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69483' and id < 4500455 and id<>'4500455' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69483' and id > 4500455 and id<>'4500455' order by id asc limit 5