半挡板一般需要半价层的个数为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29520' and id < 2401172 and id<>'2401172' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29520' and id > 2401172 and id<>'2401172' order by id asc limit 5