薄管板换热器，根据弹性圆板理论，适用于（ h

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='24911' and id < 2125223 and id<>'2125223' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24911' and id > 2125223 and id<>'2125223' order by id asc limit 5