A.300m B.100m C.150m D.200m
A.20m B.10m C.5m D.15m
A.施工人員的人數(shù) B.HDPE膜的進(jìn)貨質(zhì)量 C.施工機(jī)具的有效性 D.施工方案和技術(shù)交底