搜题请搜索小程序“爱下问搜题”
问题 单项选择题

投资组合决策的基本原则是（）。

A．收益率最大化 

B．风险最小化 

C．期望收益最大化 

D．给定期望收益条件下最小化投资风险

答案

参考答案：D

解析：

投资组合决策的基本原则是资产的风险最低与报酬最佳，即D选项。

改错题

文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏词符号（∧)，并在其下面写出该加的词。

删除：把多余的词用斜线（\ )划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1.每处错误及修改均仅限一词；

2.只允许修改10处，多者(从第11处起)不计分。

Never shall I forget the first English lesson giving by Miss Liu. One Monday morning, when she entered the classroom, we found that she was a young or beautiful lady. Then she introduced herself and said they shouldn’t call her Teacher Liu but Miss Liu. Later, she asked us to go to the blackboard and said something about ourselves with English in turn. When it was my turn, I felt so shyly that I didn’t dare to say anything before the class. She went up to me and said kindly, “Don’t afraid I believe you can do them well” At the last, 1 went to the blackboard. She praised me for which I had done.
查看答案
单项选择题

患者，男性，26岁，明显的“三多一少”症状10年，经胰岛素治疗，症状时轻时重，有明显的低血糖症状，近2个月眼睑及下肢浮肿，乏力，腰痛，BP 160／100mmHg，尿蛋白（+ +），颗粒管型少许，尿糖（+ +）。应诊断为（）

A.糖尿病肾病

B.肾动脉硬化

C.肾盂肾炎

D.肾炎

E.胰岛素副作用
查看答案