题目内容
某投资者将一半资金投资于标准差为25%、与市场组合相关系数为0.8的风险资产A，一半资金投资于标准差为18%、与市场组合相关系数为-0.6的风险资产B，已知市场组合的标准差为20%，那么该投资者的资产组合的β值为()。
查看答案
搜索结果不匹配？点我反馈
更多问题
【B3】
What must the woman do in order to get to the place she wants to？
某企业事先从制度，文化，决策，组织和控制上,从培育核心能力上提高企业防御风险的能力,该企业采用的是()对策。
In one very long sentence, the introduction to the United Nations Charter expresses the idea and the common aims of all the peoples whose governments joined together to form. the United Nations.
"We the peoples of the U.N. determined to save succeeding generations from the scourge of war, which twice in our lifetime has brought untold suffering to mankind, and to reaffirm (重申) faith in fundamental rights, in the dignity (尊严) and worth of human person, in the equal rights of men and women and of nations large and small, and to establish conditions under which justice and respect for the obligations (义务) arising from treaties (条约) and other sources of international law can be maintained, and to promote (促进) social progress and better standards of life in larger freedom, and for these ends to practise tolerance (宽容) and live together in peace with one another as good neighbors, and to unite our strength to maintain international peace and security, and to ensure, by the acceptance of principles and the instruction of methods, that armed force shall not be used, save in the common interest, and to employ international machinery for the promotion of economic and social advancement of all peoples have resolved to combine our efforts to accomplish these aims."
The essential functions of the U.N. are to maintain international peace and security, to develop friendly relations among nations, to cooperate internationally in solving international economic, social, cultural, and human problems, promoting respect for human rights and fundamental freedoms and to be a centre for coordinating (协调) the actions in attaining these common ends.
No country takes precedence (优先) over another in the U. N. Each member's rights and obligations are the same. All must contribute to the peaceful settlement of international disputes (争端), and members have pledged (保证) to refrain from the threat or use of force against other states. Though the U. N. has no fight to intervene (干预) in any state's internal affairs, it tries to
ensure that non-member states act according to its principles of international peace and security. U.N. members must offer every assistance in an approved (经核准的) U.N. action and in no way assist states against which the U. N. is taking preventive or enforcement action.
The first stated aim of U. N. was______.
微信支付 
支付宝支付