A.≤2%,3% B.≤1%,≤1% C.≤1%,0.5% D.≤0.5%,≤0.5%
A.≤5%,≤2% B.≤3%,2% C.≤3%,≤1% D.≤2%,1%
A.普通水泥 B.礦渣水泥 C.火山灰水泥 D.粉煤灰水泥