双排式脚手架是指具有（）排立杆的脚手架。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25759' and id < 2164547 and id<>'2164547' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25759' and id > 2164547 and id<>'2164547' order by id asc limit 5