测控装置的平均故障间隔时间大于（ ）h。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29476' and id < 2398281 and id<>'2398281' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29476' and id > 2398281 and id<>'2398281' order by id asc limit 5