定量调查样本量估计主要取决于调查总体预期阳性率、调查单位间变异程度、精确度和

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25510' and id < 2147587 and id<>'2147587' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25510' and id > 2147587 and id<>'2147587' order by id asc limit 5