下列有关声波的表述，不正确的是（ ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27099' and id < 2247036 and id<>'2247036' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27099' and id > 2247036 and id<>'2247036' order by id asc limit 5