交界性期前收缩的心电图表现是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30586' and id < 2467859 and id<>'2467859' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30586' and id > 2467859 and id<>'2467859' order by id asc limit 5