下列关于B-S-M模型的无红利标的资产欧式期权定价公式的说法,正确的有()。 A.N

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问题:

下列关于B-S-M模型的无红利标的资产欧式期权定价公式的说法,正确的有()。

A.N(d2)表示欧式看涨期权被执行的概率

B.N(d1)表示看涨期权价格对资产价格的导数

C.在风险中性的前提下,投资者的预期收益率μ用无风险利率r替代

D.资产的价格波动率σ用于度量资产所提供收益的不确定性

考点:期货从业衍生品定价衍生品定价题库
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Chinese space trainer Wang Yuan has been chosen as one of the volunteers for the Mars-500 test project. He was very happy to be chosen and will accept the meaningful challenge(挑战) Another five volunteers are all space lovers., including three Russians, an Italy-Colombian and a Frenchman. They are about to feel what it’s like to travel to Mars, only without leaving the earth. They are locked up together for a year and a half under a similar condition to the red planet during the whole process. So the experiment is called Mars-500.

When reporters asked what they would miss most during the 520-day special life, French trainer Charles said:”For me, it will be mainly my family, the sun and fresh air.”

The Mars-500 test will be in a special building in Moscow, Russia. Although the people won’t leave the building, they will fell as if they are on a real trip to the Mars. The most difficult thing will be to be separated(分离) from the people that they used to live with. The trainer won’t see sunsets, sunrises, won’t feel rain for 18 months. That will be hard.

The main task is to study the “Man and environment”. It’ll care about the astronauts’ getting experience and physical effects. The 520-day-test is divided into three parts,the first 250days to Mars, the middle 30days of landing on Mars, the last 240 days to return to the earth. Everyone will stay there alone for a long time and will work lonely. They will have to make decisions themselves and only then report to the earth, and the earth will tell them whether they do the right thing or not.

Each astronaut is preparing for the great challenge. It is learned that they will be launched(发射)early in June. And the experiment will end in November 2011.

小题1: _______ members were chosen as volunteers.

A.Five

B.Six

C.Three

D.Four小题2: The most difficult thing for the trainers is ______.

A.no vegetables to eat

B.they can’t watch TV

C.they can’t see many people

D.they must lie all day小题3: Mars-500 test will be done in ______

A.Moscow

B.a red planet

C.November

D.Xichang小题4: It will take trainers _______ days to land on Mars.

A.250

B.30

C.240

D.520小题5: Which sentence is NOT true about the 520-day-test?

A.The trainers won’t see rain or snow

B.The experiment will begin in June.

C.Trainers are all astronauts.

D.Trainers will report to the earth.

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2008年9月29日电,北京市是一座严重缺水的特大城市,目前人均占有量不足300立方米,远远低于联合国划定的人均1000立方米的缺水下限,为全国平均水平的1/8,世界人均水平的1/30。材料告诉我们[ ]

A、我国面临着严重的水资源形势       

B、必须立即停止对水资源的开采利用

C、必须坚持以经济建设为中心不动摇        

D、我国水资源的利用率低

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态度的行为成分

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保管期限分为()、()、()三种期限。

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患者,女,21岁。两小腿皮炎,在亚急性阶段,渗液与糜烂很少,红肿减轻,有鳞屑和结痂。外治剂宜选用()

A.洗剂

B.粉剂

C.溶液湿敷

D.软膏

E.油剂

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