A.200tB.150tC.100tD.50t
A.≥75%B.≥80%C.≥84%D.≥88%
A.流動(dòng)度≥310mm,30min后流動(dòng)度不應(yīng)小于230mmB.流動(dòng)度≥320mm,30min后流動(dòng)度不應(yīng)小于230mmC.流動(dòng)度≥310mm,30min后流動(dòng)度不應(yīng)小于240mmD.流動(dòng)度≥320mm,30min后流動(dòng)度不應(yīng)小于240mm