()是指保持资产组合中各类资产的固定比例。
A.投资组合保险策略
B.买入并持有战略
C.动态资产配置
D.恒定混合策略
参考答案:D
In the evening the General Manager gave a banquet at the International Hotel ______ the foreign guests.[ ]
A. in honor of
B. in place of
C. in face of
D. in favor of
遗传毒理学试验经常采用蚕豆作为试验材料,为什么?