在某一存储器系统中,设有只读存储器10KB,随即存储器54KB,使用16位地址来寻址

题型:单项选择题

问题:

在某一存储器系统中,设有只读存储器10KB,随即存储器54KB,使用16位地址来寻址。其中,只读存储器位于低地址段,其地址范围为( )。

A.0000H~27FFH

B.0000H~0FFFH

C.0000H~3FFFH

D.0000H~4FFFH

考点:计算机等级考试PC技术三级PC技术笔试
题型:单项选择题

关于天馈驻波比描述正确的有()。

A.驻波比是反映天馈负载匹配性能的一个指标

B.驻波比与反射系数、回波损耗有数学上的计算关系

C.当天线和馈线阻抗不匹配时,会导致驻波比变大

D.其它条件相同是,馈线越长从机柜顶测试的驻波比越小驻波比越大,回波损耗越小,反射功率越小

题型:单项选择题
Banks are not ordinarily prepared to pay out all accounts(账,账户); they rely on depositors (储户) not to demand payment all at the same time. If depositors should come to fear that a bank is not safe, that it cannot pay off all its depositors, then that fear might cause all the depositors to appear on the same day. If they did, the bank could not pay all accounts. However, if they did not all appear at once, then there would always be enough money to pay those who wanted their money when they wanted it. Mrs. Elsie Vaught has told us of a terrifying bank run that she experienced. One day in December of 1925 several banks failed to open in a city where Mrs. Vaught lived. The other banks expected a run the next day, and so the officers of the bank in which Mrs Vaught worked as a teller had enough money on hand to pay off their depositors. The officers simply told the tellers to pay on demand. The next morning a crowd gathered in the bank and on the sidewalk outside. The length of the line made many think that the bank could not possibly pay off everyone. People began to push and then to fight for places near the tellers’ windows. The power of the panic atmosphere was such that two tellers, though they knew that the bank was quite all right and could pay all depositors, drew their own money from the bank. Mrs Vaught says that she had difficulty keeping herself from doing the same.
小题1:A bank run happens when _______.
A.too many depositors try to draw out their money at one time  
B.a bank is closed for one or more days
 
C.there is enough money to pay all its depositors at one time
D.tellers of a bank take their own money from the bank
小题2:The tellers in Mrs. Vaught’s bank were told to ________.
A.explain why they could not pay out all accounts
B.pay out accounts as requested
C.make the depositors believe that the bank was stand
D.pay out money as slowly as possible
小题3: According to the passage, the actions of the depositors of Mrs. Vaught’s bank were affected           mainly by the _______.
A.ease with which they could get their money
B.confidence that Mrs. Vaught showed
C.confidence shown by other depositors of the bank
D.failure of several other banks to open
题型:单项选择题

临床检查出现下列临床症状:高热稽留,呕吐,结膜发红;粪便干硬呈粟状,附有黏液,后期出现下痢;皮肤有红斑、疹块,指压褪色,可怀疑感染()。

A、猪丹毒

B、猪肺疫

C、猪瘟

D、高致病性猪蓝耳病

题型:单项选择题

脱气原油

题型:单项选择题


阅读下面的资料,回答后面的问题:
材料一:1687年,牛顿出版了《自然哲学的数学原理》。1765年一种全新的蒸汽机在瓦特的手中诞生了。1776年,亚当•斯密的《国富论》出版。如果说,牛顿为工业革命创造了一把科学的钥匙,瓦特拿着这把钥匙开启了工业革命的大门,那么,亚当•斯密则是挥动一只看不见的手,为工业革命的推进创造了一个新的经济秩序。
材料二:在美国商务部的大门口刻有林肯总统的一句话:“专利制度就是将利益的燃料添加到天才之火上。”美国人第一次把专利权写入了宪法。
美国人在工业领域最富革命性的创造,是“福特式生产方式”的出现,第一次工业革命时期诞生了现代意义的工厂,福特的这一创造成为人类生产方式变革进程中的又一个里程碑。材料三:世界上第一台计算机在美国宾夕法尼亚大学诞生,象征着第三次工业革命即将来临,
美国率先占领了信息时代的制高点。
今天,美国在科研和开发上的投入仍居世界首位,相当于其他最富裕的西方七国的总和,使美国保持创新活力的,还有它的四千多所大学和70%的高等教育入学率。美国所拥有的全世界最庞大的高等教育系统,使它获得了信息时代的核心竞争力。

亚当·斯密的“看不见的手”是指( )。

A.资源分配模式

B.宏观调控政策

C.市场追求规律

D.对外贸易战略

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