更多“建立在SML之上的詹森指数和特雷诺指数都要求一个市场组合，在”相关的问题
下列关于久期的说法，正确的有（ ）。 A.久期也称持续期B.久期是对金融工具的利率敏感程度
下列关于久期的说法，正确的有（ ）。 A.久期也称持续期 B.久期是对金融工具的利率敏感程度或利率弹性的直接衡量 C.久期的数学公式为DP÷Dy=D×P÷(1÷ D.久期是以未来收益的现值为权数计算的现金流平均到期时间 E.某一金融工具的久期等于金融工具各期现金流发生的相应时间乘以各期现值与金融工具现值的商 此题为多项选择题。请帮忙给出正确答案和分析，谢谢！
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患者，女性，32岁，因周期性低血糖行超声检查，于胰腺体部探及直径17mm的类圆形低回声结节，边界清晰，包膜完整，内部回声均匀，其诊断最可能为（）
A.胰腺腺瘤
B.胰腺囊腺瘤
C.胰腺真性囊肿
D.胰腺癌
E.胰岛素瘤
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老师在专心致志地讲课时，发现有学生开小差。老师应采取的措施是( )。
A . 立即停止，让学生站着听课
B . 大发雷霆，要求学生公开检讨
C . 停止上课，对学生反复劝说
D . 轻拍学生，提醒学生集中精力
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机床夹具中，用来确定工件在夹具中位置的元件是（ ）。
A . 连接元件B . 对刀导向元件C . 定位元件D . 夹紧元件
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属于均匀相液体制剂的有（ ）。
A.混悬剂 B.低分子溶液剂 C.高分子溶液剂 D.溶胶剂 E.乳剂
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当遇有6级以上的大风时，禁止露天进行起重工作。
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在一阶逻辑自然推理系统Nχ中构造下面推理的证明。
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公司所属各单位应在公司的组织指导下，立足实际开展（）等柔性流动工作，拓展流动渠道，促进人才培养。
A.双向挂职
B.短期工作
C.借用借调
D.项目合作
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39.维生素B2缺乏引起的疾病有（）
A.脂溢性皮炎
B.口角炎
C.舌炎
D.脚气病
E.唇炎
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It was so （disgusted), and （somewhat hazardous), （not to mention) a huge hassle and （monet
It was so (disgusted), and (somewhat hazardous), (not to mention) a huge hassle and (monetary expense).A．disgustedB．somewhat hazardousC．not to mentionD．monetary expense
A．disgustedB．somewhat hazardousC．not to mentionD．monetary expense
B．somewhat hazardousC．not to mentionD．monetary expense
C．not to mentionD．monetary expense
D．monetary expense
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ONU信号电缆：弯曲的最小半径为电缆直径的（）倍
A、1.5
B、3.5
C、5.5
D、7.5
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They may not be the richest, but Africans remain the world"s staunchest optimists. An annual survey by Gallup International, a research outfit, shows that, when asked whether this year will be better than last, Africa once again comes out on top. Out of 52,000 people interviewed all over the world, under half believe that things are looking up. But in Africa the proportion is close to 60% almost twice as much as in Europe. Africans have some reasons to be cheerful. The continent"s economy has been doing fairly well with South Africa, the economic powerhouse, growing steadily over the past few years. Some of Africa"s long-running conflicts, such as the war between the north and south in Sudan and the civil war in Congo, have ended. Africa even has its first elected female head of state, in Liberia. Yet there is no shortage of downers too. Most of Africa remains dirt poor. Crises in places like Cote d"Ivoire, Sierra Leone and Zimbabwe are far from solved. And the democratic credentials of Ethiopia and Uganda, once the darlings of western donors, have taken a bad knock. AIDS killed over gm Africans in 2005, and will kill more this year. So is it all just a case of irrational exuberance Meril James of Gallup argues that there is, in fact, usually very little relation between the survey"s optimism rankings and reality. Africans, this year led by Nigerians, are consistently the most upbeat, whether their lot gets better or not. On the other hand, Greece—hardly the worst place on earth—tops the gloom and doom chart, followed closely by Portugal and France. Ms James speculates that religion may have a lot to do with it. Nine out of ten Africans are religious, the highest proportion in the world. But cynics argue that most Africans believe that 2006 will be golden because things have been so bad that it is hard to imagine how they could possibly get worse. This may help explain why places that have suffered recent misfortunes, such as Kosovo and Afghanistan, rank among the top five optimists. Moussaka for thought for those depressed Greeks.
A．detrimentalB．fragileC．transientD．constant
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