若一袋水泥50Kg和含水量为2%的混合骨料320Kg拌合时加入26Kg的水,则此拌合物的水灰比为( )
A.[26+320×2%/(1+2%)]/50 B.(26+320×2%)/50 C.[26+320-320/(1+2%)]/50 D.26/50 E.[26-320×2%/(1+2%)]/50正确答案AC
若一袋水泥50Kg和含水量为2%的混合骨料320Kg拌合时加入26Kg的水,则此拌合物的水灰比为( )
A.[26+320×2%/(1+2%)]/50 B.(26+320×2%)/50 C.[26+320-320/(1+2%)]/50 D.26/50 E.[26-320×2%/(1+2%)]/50正确答案AC