马柯威茨投资组合理论的主要缺陷有()。 A.当证券数量较多时,基金输入所要求的估计量

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问题:

马柯威茨投资组合理论的主要缺陷有()。

A.当证券数量较多时,基金输入所要求的估计量非常大

B.解的不稳定性

C.数据误差带来解的不可靠性

D.重新分配的成本高

考点:证券业从业考试证券投资基金证券从业考试证券投资基金真题2009年3月
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Monroe, despite his generally poor appetite, thoroughly enjoyed the three meals he ate at the Tip-Top Restaurant, but, unfortunately, after each meal he became ill. The first time he ate an extra-large sausage pizza with a side order of hot peppers; the second time he took full advantage of the all-you-can-eat fried shrimp and hot peppers special; and the third time he had two of Tip-Top’s gaint meatball sandwiches with hot peppers. Since the only food all three meals had in common was the hot peppers, Monroe concludes that it is solely due to Tip-Top’s hot poppers that he became ill.
Monroe’s reasoning is most vulnerable to which one of the following criticisms

A.He draws his conclusion on the basis of too few meals that were consumed at Tip-Top and that included hot peppers.

B.He posits a causal relationship without ascertaining that the presumed cause preceded the presumed effect.

C.He allows his desire to continue dining at Tip-Top to bias his conclusion.

D.He fails to establish that everyone who ate Tip-Top’s hot peppers became ill.

E.(E) He overlooks the fact that at all three meals he consumed what was, for him, an unusually large quantity of food.

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一个角是36°,则它的余角是(    ),补角是(    )。

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传染病的治疗方法有()

A.一般及支持治疗

B.病原或特效疗法

C.对症疗法

D.康复疗法

E.中医中药疗法

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在国际市场营销调研中,下列各项误差属测量误差的有()

A.替代信息误差

B.抽样误差

C.回答误差

D.调研对象范围误差

E.处理过程误差

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关于学习策略的说法,正确的是()。

A、学习策略是可教的。

B、培养大学生的学习策略可以从教与学两个方面考虑。

C、学习策略的运用具有高低水平之分。

D、机械的背诵和朗读属于高级的学习策略。

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