不属于压力容器主要受压件的是（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='24907' and id < 2125055 and id<>'2125055' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24907' and id > 2125055 and id<>'2125055' order by id asc limit 5