.关于叠加定理的应用，各独立源处理方法为（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69505' and id < 4502625 and id<>'4502625' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69505' and id > 4502625 and id<>'4502625' order by id asc limit 5