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问题 填空题

“神舟九号”运行13天飞行距离约为8873000千米，用科学记数法表示（保留两位小数）约为______．

答案

8873000=8.873×106≈8.9×106（千米）．

故答案为：8.9×106千米．

问答题 简答题

简述影响商业银行持有超额准备金的因素。
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单项选择题

Darlene Villanueva provides analytical support for portfolio managers at a small investment management firm. Villanueva’s latest report highlights two companies. Company A and Company B. Company A has consistently earned a higher rate of return on assets than their cost of capital, but the stock price is substantially greater than the fair value. Company B’s earnings have been pulled down by the recent economic slowdown, but its stock price has remained stable despite the negative returns on the overall market. Which of the following statements correctly categorizes the two companies（）

A. Stock A is a growth stock and Company B is a cyclical company.

B. Company A is a growth company and Stock B is a defensive stock.

C. Company A is a value company and Stock B is a cyclical stock.
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