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问题 填空题

语句cout＜＜setiosflagags(ios::showpos)＜＜125＜＜"/t"＜＜-125＜＜endl；的输出结果为 【14】 。

答案

参考答案：+125-125

单项选择题

An analyst wants to calculate an appropriate price to earnings (P/E) ratio for a company that operated in mining industry using the following information. The company's average return on equity was determined to be 13. 3 percent during the four-year period ending in 2011, and that the company's book value per share was $8.45 at the beginning of that period but had increased to $12.36 in 2011. If the company's stock is priced at $40 per share, the appropriate P/E is closest to:（）

A. 24.3

B. 28.9

C. 56.4
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问答题 简答题

简述睡眠障碍主要类型。
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