题目内容
下列泵类中,属于按工作原理分类的是( )。
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SQL Error: select id,body,options from ***_enewstiku where sourceid='24823' and id < 2121902 and id<>'2121902' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24823' and id > 2121902 and id<>'2121902' order by id asc limit 5