试题与答案

假设证券组合P由两个证券组合Ⅰ和Ⅱ构成,组合Ⅰ的期望收益水平和总风险水平都比Ⅱ的高,

题型:单项选择题

题目:

假设证券组合P由两个证券组合Ⅰ和Ⅱ构成,组合Ⅰ的期望收益水平和总风险水平都比Ⅱ的高,并且证券组合Ⅰ和Ⅱ在P中的投资比重分别为0.48和0.52。那么,( )

A.组合P的总风险水平高于Ⅰ的总风险水平

B.组合P的总风险水平高于Ⅱ的总风险水平

C.组合P的期望收益水平高于Ⅰ的期望收益水平

D.组合P的期望收益水平高于Ⅱ的期望收益水平

答案:

参考答案:D

试题推荐
题型:单项选择题

一般资料:求助者,女性,66岁,某工厂退休职工。
案例介绍:求助者一年前睡觉时突然憋醒,胸闷气短,觉得自己马上就不行了,送入急诊后诊断为呼吸暂停综合症,自己非常后怕,因为自己的哥哥就是夜里突发心脏病去世的,医生也说这种病如不及时发现就会憋死。求助者立即住院做了手术。术后求助者回家休养,但出现了入睡困难的症状,经常半夜醒来难以再睡,尤其到两三点后就非常紧张、害怕,不断在想千万别出现一年前的情景,想着想着胸口就真的闷起来了,心慌、气短,浑身出汗,多次被急救车送到医院,但未查出明显器质性病变。这种情况几乎每周都要发生两到三次,无明显发作征兆,发作时神志清楚,十几分钟后能自行缓解。服用过安定类药物,但无明显改善。
心理咨询师观察了解到的情况:求助者个性敏感内向,身体状况基本良好。

该求助者情绪症状的主要特点是( )

A.突然发作,不可预期

B.躯体症状严重

C.固定发作,可有预期

D.躯体症状轻微

查看答案
题型:阅读理解

阅读理解。

     Believe it or not, America's favorite snack food is the potato chip. There is a story behind how it was

first made. One might think that something genius thought up the first potato chips, but it didn't happen

that way. The Moon Lake Restaurant was a well-known restaurant in New York in 1853. Its menu included

French-fried potatoes: a popular food recipe brought back from France by Thomas Jefferson. These were

thickly cut potatoes, fried until golden brown and crisp in the outside. One evening a guest in the dining hall

felt that his potatoes were too thick and sent them back to the kitchen. The cook sliced some potatoes thinner

than before and prepared them for the complaining guest. He was still not satisfied and sent them back again!

By this time the cook was angry and decided to do exactly what the dinner guest wanted: slice the potatoes

as thin as possible. Then they would be so crisp that the diner wouldn't be able to use his fork to eat them.

When the paper thin browned potatoes arrived the dinner was pleased. He was so happy with them that other

guests started ordering the new potatoes. The cook's plan to stop the dinner guest from complaining did not

turn out as he had planned. Soon Saratoga Chips appeared on the menu and became so popular that people

wanted to take some home. The restaurant started selling small packages of the potato chips. A few years later

they were selling all over the United States. But because the potatoes had to be peeled by hand, it was a time-

consuming chore and potato ships were often out of stock. In the 1920s a mechanical potato peeler was

invented and soon there were potato chips in abundance. They gradually spread all over the world, and have

remained popular ever since.

1. According to this passage,the cook of the Moon Lake Restaurant _____. [ ]

A. enjoyed making potato chips very much

B. wanted to silence a guest's complaining

C. liked playing jokes on guests

D. was pleased that other guests liked the chips

2. The restaurant started to sell potato chips because _____.[ ]

A. potato chips were liked by people

B. the dinner guest asked for them

C. it was not difficult to cook them

D. they were pleased with the thick potato chips

3. According to this passage, mass production of potato chips was made possible when _____. [ ]

A. potatoes could be peeled by machines

B. potatoes were peeled by a large number of cooks

C. there was a growing demand for them

D. they first appeared in a restaurant

4. Potato chips have been popular in the US _____. [ ]

A. for more than 200 years

B. ever since 1920

C. for less than 100 years

D. since the 19th century

查看答案
微信公众账号搜索答案