单项选择题
A.1 B.2 C.3 D.4
A.1.2 B.1.3 C.1.4 D.1.5
A.1.1 B.1.2 C.1.3 D.1.4
A.20m B.25m C.30m D.40m
A.0.53 B.0.43 C.0.33 D.0.23
A.固定封闭 B.交替倒用封闭 C.按施工组织设计规定 D.以上说法均不对
A.500 B.800 C.1000 D.1200
A.20% B.30% C.40% D.50%
A.100m B.110m C.120m D.130m
A.1m B.1.2m C.1.5m D.1.8m
A.单排外脚手架 B.双排外脚手架 C.单排里脚手架 D.双排里脚手架