下列关于正常人血管内血液不发生凝固的原因的叙述，错误的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30303' and id < 2450304 and id<>'2450304' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30303' and id > 2450304 and id<>'2450304' order by id asc limit 5