变压器的空载损耗属于网络损耗的可变损耗。(  )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69512' and id < 4503320 and id<>'4503320' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69512' and id > 4503320 and id<>'4503320' order by id asc limit 5