容器开口补强圈应在设备压力试验前通（ ）MPa的压缩空气检査焊缝质量。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='24906' and id < 2125024 and id<>'2125024' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24906' and id > 2125024 and id<>'2125024' order by id asc limit 5