若f(x)= ，则下列等式成立的是（   ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16565' and id < 1441166 and id<>'1441166' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16565' and id > 1441166 and id<>'1441166' order by id asc limit 5