采用锥形堵塞堵死漏管，要求金属锥塞的锥度一般为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24912' and id < 2125271 and id<>'2125271' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24912' and id > 2125271 and id<>'2125271' order by id asc limit 5