线路末端的电压调整是指(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69497' and id < 4501923 and id<>'4501923' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69497' and id > 4501923 and id<>'4501923' order by id asc limit 5