线路距离保护，二次定值为1欧姆，当电流互感器的变比由600/5变成1200/5，整定值变为(   )欧姆。（0.5）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69421' and id < 4494862 and id<>'4494862' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69421' and id > 4494862 and id<>'4494862' order by id asc limit 5