Ⅰ导联属标准导联，其正电极应安放在

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30587' and id < 2467929 and id<>'2467929' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30587' and id > 2467929 and id<>'2467929' order by id asc limit 5