测量tanδ时，采用（   ）无法减小或者消除干扰。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68995' and id < 4464896 and id<>'4464896' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68995' and id > 4464896 and id<>'4464896' order by id asc limit 5