松开髙压螺栓时，按紧固方法相反的顺序对称松开，每次松开（ ）圈，直到所有螺母完全松开为止。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='24908' and id < 2125100 and id<>'2125100' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24908' and id > 2125100 and id<>'2125100' order by id asc limit 5