A.1.0~1.1 B.1.2~1.5 C.1.5~3.5 D.>3.5
A.800℃ B.900℃ C.1000℃ D.1100℃
A.球團礦,燒結(jié)礦,褐鐵礦 B.燒結(jié)礦,球團礦,褐鐵礦 C.褐鐵礦,赤鐵礦,磁鐵礦 D.褐鐵礦,磁鐵礦,赤鐵礦