单选题:What does"a bird's-eye view"mean? 题目分类:中学英语 题目类型:单选题 查看权限:VIP 题目内容: What does"a bird's-eye view"mean? A.See a view with a bird' s eye B.A bird looks at a beautiful vie C.It is a general view from a high positio D.If is a scenic plac 参考答案: 答案解析:
完全正相关的证券A和证券B,其中证券A标准差为40%,期望收益率为l5%,证券B的标准差为20%,期望收益率为12%,那 完全正相关的证券A和证券B,其中证券A标准差为40%,期望收益率为l5%,证券B的标准差为20%,期望收益率为12%,那么证券组合(25%A+75%B)的标准差 分类:中学英语 题型:单选题 查看答案