题目内容
起重机械失稳的主要原因有()
2021-10-01
A.机械故障
B.超载D.行走速度过快
C.吊费偏心过大E.支腿不稳定
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='24853' and id < 2123019 and id<>'2123019' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24853' and id > 2123019 and id<>'2123019' order by id asc limit 5