心电图中如果P-P间期为0.8秒，那么心率为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30587' and id < 2467893 and id<>'2467893' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30587' and id > 2467893 and id<>'2467893' order by id asc limit 5