倾倒液体试剂时，瓶上标签应朝哪一个方向？（ ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30400' and id < 2457447 and id<>'2457447' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30400' and id > 2457447 and id<>'2457447' order by id asc limit 5