理财规划师预计某权证将来有10%收益率的概率是0.35,有20%收益率的概率是0.5

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问题:

理财规划师预计某权证将来有10%收益率的概率是0.35,有20%收益率的概率是0.5,而出现-10%的收益率的概率是0.15,那么该权证收益率的数学期望是()。

考点:经济学证券投资证券投资题库
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甲公司向乙公司购买一批家具,现履行期尚未开始,但乙公司明确表示因技术人员流失,该批家具无法制造,若甲公司解除合同,则不正确的是( )。

A.解除合同的通知到达乙公司时合同解除

B.解除合同的通知应经乙公司同意时合同解除

C.甲公司也可以等履行期限届至后要求乙公司承担违约责任

D.甲公司可直接要求乙公司承担违约责任

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—What can I do for you, sir?

—No, I only want to speak to the person __________.[ ]

A. in danger  

B. in return

C. in peace  

D. in charge

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推导出白矮星质量上限的美籍印度科学家是钱德拉塞卡,在白矮星内部与强大引力相平衡的是简并电子气的压力;推导出中子星质量范围的科学家是奥本海默-佛柯父,在中子星内部与强大引力相平衡的是简并中子气压力

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Washington: The Bush administration has ________for the first time that it may be willing to ________a multinational force in Iraq to operate under the ________of the United Nations as long as ________by an American. The idea was described by Richard L. Armitage, the deputy secretary of state, as just "________" in discussions at the United Nations. It was first ________publicly last week by Kofi Annan, the United Nations’’ secretary general.Mr. Armitage’’s remarks, made ________to regional reporters and released by ________today, represent ________in course for the administration, which has until now insisted that all ________matters in Iraq remain under total American control. Allowing the United Nations ________would be intended to win the support of the Security Council for ________authorizing the ________ occupation of the country.In his remarks, Mr. Armitage ________to discuss the plans________, saying, "I don’’t think it helps to ________publicly right now." But he described the arrangement under consideration as "a multinational force________" in which "the American would be the U.N. commander."On Monday, Defense Secretary Donald H. Rumsfeld was asked whether he could ________American troops fighting_______. His answer: "I think that’’s not going to happen." But he went on to rule out only "________" meaning by the United Nations, whose troops wear blue helmets over a peacekeeping force in Iraq.

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选择高压断路器应从()方面因素考虑。

A、动稳定

B、热稳定

C、动作时间不必考虑

D、操作方式

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