电力网某条线路额定电压为UN=110kV,则它表示的是(  )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69510' and id < 4503173 and id<>'4503173' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69510' and id > 4503173 and id<>'4503173' order by id asc limit 5