脚手架开始搭设立杆时,应每隔( )跨设置一根抛撑,直至连墙件安装稳定后,方可根据情况拆除。
AA.1 m,B.6m,C.12m,D.18m
BA.1 m,B.6m,C.12m,D.18m
CA.1 m,B.6m,C.12m,D.18m
DA.1 m,B.6m,C.12m,D.18m
AA.1 m,B.6m,C.12m,D.18m
BA.1 m,B.6m,C.12m,D.18m
CA.1 m,B.6m,C.12m,D.18m
DA.1 m,B.6m,C.12m,D.18m