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问题 单项选择题

下面是8086/8088微处理器有关操作的描述： ①计算有效地址 ②分析指令，产生控制信号 ③计算物理地址，传送执行过程中需要的操作数或运行结果 ④预取指令至指令队列缓冲器 其中由总线接口部件BIU完成的操作是( )。

A．①

B．③

C．①和②

D．②和④

答案

参考答案：D

单项选择题

请根据以下信息，回答第86-90 题： 张德宝，昌盛电线股份有限公司的董事长，是公司的最大股东，该公司在中小企业版上市交易，主营业务是生产铜质电线，产品主要销往北美地区。金融理财师小刘一直以来为张德宝提供私人理财服务，有时也在力所能及的范围内为他的公司理财提供咨询和建议，建立了良好的关系。张德宝持有现金1,000 万元人民币和200 万美元，拥有昌盛电线30%的股份，拥有2 处住宅此外再无其他财产或投资。2008 年初，他请来小刘讨论以下几个问题： 一、帮助分析公司的财务状况以及发展规划； 二、个人理财规划； 三、风险管理。 昌盛及其主要竞争对手民生、永久、联捷的财务数据如下：

注： ①．公司总股本是1亿股，目前股票价格5.8元； 公司2007年分红以及未来分红预测如下：

分红比率40%，2007年底刚分红1,560万元。根据历史经验，预计到2010年底，昌盛股票的市盈率将达到20倍，此后将一直稳定在这个水平。 ③．电线制造行业平均的β系数为1.2，市场预期收益率是12%，无风险利率是3%。

张德宝感觉自己的股票目前价格（5.8元）被低估了，便就此事咨询小刘。小刘根据以上信息，利用红利贴现模型估算了昌盛的股价，结果证实股价确实被低估了。小刘估算的价格是（）。

A．6.46 元

B．6.93 元

C．7.91 元

D．8.42 元
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填空题


A patrol team of sea lions and dolphins featured in a large-scale military exercises being conducted by the U. S. and its allies in the Pacific Ocean. The machine (1) took part in simulated mine recovery and mine detection missions during the biennial Rim of the Pacific Exercise (RIMPAC) war games. The (2) started on June 19 and will run (3) Friday.
"There are a number of mechanical systems that work in those areas. (4) high-tech gadgets deployed by the military can’t (5) the natural skills of dolphins and lions," said Tom Lapuzza, spokesman for UN Navy’s Marine Mammal Program. Sea lions have "incredible good underwater (6) " and can dive down to 300 meters to catch a recovery line to a mine, he said. Dolphins use sonar to (7) mine.
Human beings have a long (8) of training animals to join the military. Horses have been the most widely-used animals (9) the recorded history of (10) . In early times, horses were used to (11) chariots or to (12) armored forces. With the development of modem weapons and motorized (13) , the use of horses for military purposes fell into (14) . (15) , horses were still used (16) by the German army during World War II for transporting (17) and equipment, including artillery.
During World War II, (18) with explosives strapped to their backs were used as anti-tank weapons. In other (19) , they were used for detecting mines. Some dogs were also used as messengers.
Other animals have also (20) in the military. Recorded history shows the use of elephants for military purposes as early as 1,100 B. C.. They were employed during World War II by both the Japanese army and the (21) .
There are records showing that over 100,000 reindeer were used by Finland to tow sleds during World War II. They carried the (22) to hospitals, brought supplies to the troops and moved heavy anti-tank weapons. It is well documented that oxen have been (23) used in war as improvised beasts of burden. During World War II, spiders were employed by the Allies to spin silk for (24) in cross-hairs on bomb scopes and other optical instruments. People also are finding that Vampire bats’ ability to use echolocation is very interesting as we (25) to learn how it works and it may benefit the army.
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