下列对波的传播速度v的表述中，描述正确的是（）.

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32666' and id < 2598115 and id<>'2598115' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32666' and id > 2598115 and id<>'2598115' order by id asc limit 5