纯利率
参考答案：没有风险、没有通货膨胀情况下的社会平均资金利润率。
On AIDS Day, the minister of Health Department demanded that the problems__________ paid special attention to.
A．referred to being
B．referred to be
C．refer to being
D．refer to be
辐射灭菌法是
A．借助空气传热灭菌B．利用大于常压的饱和蒸汽灭菌C．借助γ射线杀灭微生物D．穿透力最弱的灭菌E．过滤除去微生物
