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某三跨钢筋混凝土框架结构高层建筑,抗震等级为二级,边跨跨度为5.7m,框架梁截面b×h=250mm×600mm,柱截面为500mm×500mm,纵筋采用HRB400级、箍筋采用HPB300级钢筋(fyv=270N/mm2),用C30混凝土。重力荷载代表值作用下,按简支梁分析的边跨梁梁端截面剪力设计值VGb=130.4kN。在重力荷载和地震作用的基本组合下作用于边跨一层梁上的弯矩值为:梁左端:Mmax=200kN·m,-Mmax=-440kN·m梁右端:Mmax=175kN·m,-Mmax=-360kN·m梁跨中:Mmax=180kN·m边跨梁:V=230kN取as=as'=35mm. 该边跨梁跨中截面下部纵向钢筋截面面积As(mm2),与下列何项数值最为接近()提示:不考虑跨中截面上部纵向钢筋,按单筋梁计算。

A. 400
B. 710
C. 850
D. 1000

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RS-232-C是目前常见的一种接口标准,它是由 (1) 提供制定的。该标准在OSI模型中属于 (2) 层协议标准,通过RS-232-C来连接两个设备最少要连接 (3) 条线。这个标准的设计数据速率是处理 (4) bit/s。 (4) bit/s条件下,采用RS-422标准来代替RS-232-C,连接设备间的距离可扩展到约为原有的 (5) 倍。 2()

A. 会话
B. 数据链路
C. 网络
D. 运输
E. 物理

保荐机构在对本次证券发行的推荐意见中应逐项说明本次证券发行是否符合《首次公开发行股票并上市管理办法》或者《上市公司证券发行管理办法》规定的发行条件并载明得出的每项结论,但不必列明查证过程及事实依据。( )

A. 对
B. 错

Fears of "mad cow" disease spread (1) the globe last week (2) South Africa, New Zealand and Singapore joining most of Britain’ s European Union partners in (3) imports of British beef. In London, steak restaurants were empty follwing the March 20 announcement by scientists that they had found a (4) link between mad cow disease from British beef and its human (5) , Creutzfeldt-Jakob disease(CJD) .Efforts to reassure consumers and governments proved (6) . France, Germany, Italy, Finland and Greece were among countries which announced bans (7) British beef shipments.A committee of EU veterinary experts, meeting in Brussels, (8) new protective measures but said transmission of the disease from cattle to humans was unproven and did not (9) a general ban on British beef exports. Britain’s own main consumer group advised people to (10) beef if they wanted to be absolutely sure of not (11) CJD which destroys the brain and is always (12) ."Could it be worse than AIDS"The stark headline in Friday’s Daily mail newspaper encapsulated the fear and uncertainty (13) Britain. CJD (14) humans in the same way that BSE makes cows mad—by eating away nerve cells in the brain (15) it looks like a spongy Swiss cheese.The disease is incurable. Victims show (16) of dementia and memory loss and usually die (17) six months.Little is known (18) sure about the group of diseases known collectively as spongiform encephalopathies, which explains (19) some eminent scientists are not prepared to (20) a human epidemic of AIDS-like proportions. Read the following text. Choose the best word (s)for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.9()

A. call on
B. call for
C. call in
D. call forth

In an interview last month, Frank Church, chairman of the Senate committee that is investigating the CIA, issued an oblique but impassioned warning, that the technology of eavesdropping had become so highly developed that Americans might soon be left with "no place to hide". That day may have arrived. Newsweek has learned that the country’s most secret intelligence operation, the National Security Agency, already possesses the computerized equipment to monitor nearly all overseas telephone calls and most domestic and international printed messages. The agency’s devices monitor thousands of telephone circuits, cable lines and the microwave transmissons that carry an increasing share of both spoken and written communications. Computers are programed to watch for "trigger" words or phrases indicating that a message might interest intelligence analysis, when the trigger is pulled, entire messages are tape-recorded or printed out. That kind of eavesdropping is, however, relatively simple compared with the breakthroughs that lie ahead in the field of snoopery. Already it is technically feasible to "bug" an electric typewriter by picking up its feeble electronic emissions from a remote location and then translating them into words. And some scientists believe that it may be possible in the future for remote electronic equipment to intercept and "read" human brain waves. Where such capabilities exist, so too does the potential for abuse. It is the old story of technology rushing forward with some new wonder, before the man who supposedly control the machines have figure out how to prevent the machines from controlling them. What is the author’s attitude towards eavesdropping

Admiration.
B. Worry.
C. Fury.
D. Unconcern.

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