A .0.5m
B .0.8m
C .0.3m
[B单选题]降水深度小于2m的降水方法是()。A.喷射井点B.管井C.辐射井D.潜埋井
[单选题]确定排水沟间距时,当排水沟深度一定时,而土壤给水度较大时,间距()A . 可以大些B . 必须大些C . 可以小些D . 必须小些
[单选题]矩形排水沟,底宽5m,水深3m,水力半径为( )。A.5mB.3mC.1.36mD.0.94m
[单选题]矩形排水沟,底宽5m,水深3m,水力半径为( )。A.5mB.3mC.1.36mD.0.94m
[单选题]矩形排水沟,底宽5m,水深3m,水力半径为( )。A.5mB.3mC.1.36mD.0.94m
[单选题]矩形排水沟,底宽5m,水深3m,水力半径为()。A.5mB.3mC.1.36mD.0.94m
[单选题]矩形排水沟,底宽5m,水深3m,水力半径为( )。A.5mB.3mC.1.36mD.0.94m
[单选题]矩形排水沟,底宽5m,水深3m,水力半径为( )。A.5mB.3mC.1.36mD.0.94m
[单选题]矩形排水沟,底宽5m,水深3m,水力半径为()。A.5mB.3mC.1.36mD.0.94m
[单选题]矩形排水沟,底宽5m,水深3m,水力半径为( )。A.5mB.3mC.1.36mD.0.94m