安全绳的任意一股磨损达原绳的（）就必须更换。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25759' and id < 2164539 and id<>'2164539' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25759' and id > 2164539 and id<>'2164539' order by id asc limit 5