A.41% B.45% C.40% D.42%
A.利于結(jié)晶B.蒸發(fā)多余水分C.消除過火石灰的危害D.降低發(fā)熱量
A.CaSO4•2H2O B.CaSO4 C.CaSO4•1/2H2O D.CaO