当血小板的数量低于下列哪项数值时可引起出血 现象（      ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25934' and id < 2179371 and id<>'2179371' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25934' and id > 2179371 and id<>'2179371' order by id asc limit 5