一台将10KV升为110KV的变压器，其额定变比为(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69497' and id < 4501892 and id<>'4501892' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69497' and id > 4501892 and id<>'4501892' order by id asc limit 5