多项选择题
A.冲压钢脚手板 B.木脚手板 C.竹编板 D.大芯板
A.500 B.600 C.700 D.900
A.层高不大于5m时为6mm，层高大于5m时为8mm B.层高不大于5m时为8mm，层高大于5m时为6mm C.层高不大于5m时为7mm，层高大于5m时为5mm D.层高不大于5m时为5mm，层高大于5m时为7mm