采用人工开挖土方当临近设计高程时，应留出（）的保护层暂不开挖，等上部结构施工时，再予挖除。
A、01～02mB
暂无解析
Yoursister_______tovisityouquiteofen,didn'tshe?
Anumberofcompaniesusenontraditionalbenefitsandperkstohelpemployeescopewithstress.
Thecompanyalsooffersanexercisephysiologisttohelpemployeessufferingfromstress.
The( )ofyellowandblueformgreen.
I____comeyesterday,butIcouldnot.
