单项选择题
A.石膏 B.雄黄 C.芒硝 D.朱砂 E.信石
炉甘石主含()A.ZnCO3B.As2S2C.As2O3D.FeS2E.As2S3
单项选择题炉甘石主含()
A.ZnCO3 B.As2S2 C.As2O3 D.FeS2 E.As2S3
信石主含()A.ZnCO3B.As2S2C.As2O3D.FeS2E.As2S3
单项选择题信石主含()
雌黄主含()A.ZnCO3B.As2S2C.As2O3D.FeS2E.As2S3
单项选择题雌黄主含()