气体灭火系统的管道末端应采用防晃支架固定，支架与末端喷嘴间的距离不应大 于（ ）mm0

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='23347' and id < 2038318 and id<>'2038318' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='23347' and id > 2038318 and id<>'2038318' order by id asc limit 5