球团矿生熟混杂，强度相差悬殊，这可判断为炉料下降不均或炉内（）相差太大。
A.偏析
B.风量
C.温度
参考答案：C
世界上的任何东西全都是婆罗门的财产，它被认为是______
A．世间主宰 B．人类主宰C．万物之主 D．万物之长
Forty percent of the rats included in an experiment were male rats. If some of the rats died during the experiment and 30 percent of the rats that died were male rats, what was the ratio of the death rate among the male rats to the death rate among the female rats ？（）
A.A
B.B
C.C
D.D
E.E
