变压器装设的过电流保护，是变压器(  )。（0.5）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id < 4494321 and id<>'4494321' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id > 4494321 and id<>'4494321' order by id asc limit 5