人的唾液中不含有下列哪种物质

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30848' and id < 2484435 and id<>'2484435' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30848' and id > 2484435 and id<>'2484435' order by id asc limit 5