以下溶剂属于偶极亲质子溶剂者是 A．腈类(如乙腈) B．酰胺类 C．吡啶 D．二甲亚

若长度为n的线性表采用顺序存储结构，在等概率假设的情况下，删除一个数据元素，需要先依次移动______个数据元素。

因素分析法是最简便但揭示能力最强的评价方法。（）

在荣获“2004年度影响中国家电未来发展趋势的十大创新产品”中，海尔“双动力”洗衣机．海尔蒸汽转波炉两款产品名列其中，大大提高了海尔的市场占有率。于是有人认为一个公司，只要进行技术创新，就能形成自己的竞争优势，就能取得成功。这种观点对吗？为什么？

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Jamal Winfield is an analyst with Stolzenbach Technologies, a major computer services company based in the U.S. Stolzenbach’s management team is considering opening new stores in Mexico, and wants to estimate the cost of equity capital for Stolzenbach’s investment in Mexico. Winfield has researched bond yields in Mexico and found that the yield on a Mexican government 10-year bond is 7.7 percent. A similar maturity U.S. Treasury bond has a yield of 4.6 percent. In the most recent year, the standard deviation of Mexico’s All Share Index stock index and the S&P 500 index was 38 percent and 20 percent respectively. The annualized standard deviation of the Mexican dollar-denominated 10-year government bond over the last year was 26 percent. Winfield has also determined that the appropriate beta to use for the project is 1.25, and the market risk premium is 6 percent. The risk free interest rate is 4.2 percent. What is the appropriate country risk premium for Mexico and what is the cost of equity that Winfield should use in his analysis Country Risk Premium for Mexico Cost of Equity for Project（）①A. 4.53%19.06% ②B. 5.89%17.36% ③C. 4.53%17.36%

A. ①

B. ②

C. ③

男，35岁，因发热．咳嗽、头痛、腰痛4天，体温在39～40℃之间。查体：面部潮红，眼球结膜水肿，软腭有网状充血和出血点。化验：血常规WBC12×10⁹／L，中性89％，血小板50×10⁹／L，尿常规除蛋白（+++）外余无异常。于1999年12月15日收入西安某医院。医生首先考虑的诊断是（）

A.急性上呼吸道感染

B.流行性感冒

C.急性肾炎

D.肾综合征出血热

E.急性支气管炎