更多“以下能说明广州是中国近现代革命的策源地的选项有：（）”相关的问题
第二序列弯曲是指（）
A.在矫治弓丝上作水平向的一些弯曲
B.在矫治弓丝上作垂直向的一些弯曲
C.在矫治弓丝上作转矩的一些弯曲
D.T型曲
E.泪滴形曲
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《招标投标法》最直接的立法目的是（）。
A．规范招标投标活动
B．提高经济效益，保证项目质量
C．保护国家利益、社会公共利益和招标投标活动当事人的合法权益
D．促进廉政建设
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在用DEM内插求解待定点上的高程时，通常采用的差值方法是：（）
A.整体函数内插 B.单个函数内插 C.局部函数内插 D.分步函数内插
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下图是某遗传病的系谱图，该病最不可能的遗传方式是（）
A.常染色体显性遗传
B.常染色体隐性遗传
C.X染色体显性遗传
D.X染色体隐性遗传
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无列检作业的车站，对临时发生故障的车辆不能挂入列车运行时，车辆部门在接到通知后应立即前往检查，4并补发（）。
A.车统-23 B.车统-36 C.车统-45 D.车统-113
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卡莫司汀为（）
A．亚硝基脲类抗肿瘤药
B．乙烯亚胺类抗肿瘤药
C．噻唑烷二酮类降糖药
D．孕激素拮抗药
E．H1受体拮抗药
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No document is safe any more. Faking once the domain of skilled deceivers that used expensive engraving (雕刻) and printing equipment, has gone mainstream since the price of desktop-publishing systems has dropped. In ancient times, faking was a hanging offence. Today, desktop counterfeiters have little reason to worry about prison, because the systems they use are universal and there is no means of tracing forged documents to the machine that produced them. This, however, may soon change thanks to technology development by George Chiu, an anti-faking engineer. His approach is based on detecting imperfections in the print quality of documents. Old-school court scientists were able to trace documents to particular typewriters based on quirks (瑕疵) of the individual keys. He employs a similar approach, exploiting the fact that the rotating drums and mirrors inside a printer are imperfect pieces of engineering which leave unique patterns of banding in their products. Although these patterns are invisible to the naked eye, they can be detected and analyzed by computer programs, and it is these that Dr. Chiu has spent the past year devising. So far, he cannot trace individual printers, but he can tell pretty reliably which make and model of printer was used to create a document. That, however, is only the beginning. While it remains to be seen whether it will be possible to trace a counterfeit (伪造的) document back to its guilty creator on the basis of manufacturing imperfections, Dr. Chiu is now working out ways to make those imperfections deliberate. He wants to modify the printing process so that unique, invisible signatures can be incorporated into each machine produced which would make any document traceable. Ironically, it was after years of collaborating with printing companies to reduce banding and thus increase the quality of prints, that he came up with the idea of introducing artificial banding that could encode identification information into a document. Using the banding patterns of printers to secure documents would be both cheap to implement and hard, if not impossible, for those without specialist knowledge and hardware to hide out. Not surprising, the American Secret Service is monitoring the progress of this research very closely, and is providing guidelines to help Dr. Chiu to travel in what the service thinks is the right direction, which is fine for catching criminals. But how the legal users of printers will react to Big Brother being able to track any document back to its source remains to be seen.
A．cheap printers make it easier to forge documentsB．the American Secret Service can trace any documentC．every printed document will be secretly marked outD．counterfeiters have more advanced technologies to use
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失血量在()ml时，应立即输血
A.300
B.300～500
C.500～800
D.800～1000
E.1000
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进站（进路）信号机故障，使用一般引导接车时在确认引导手信号显示正确后，LKJ按压（）。
A.【解锁】+【确认】键
B.【开车】+【解锁】键
C.【解锁】键
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有一类尺寸,他们是按某一【基准】来标注尺寸的,这些尺寸首尾相连(除第一个和最后一个尺寸之外),前一尺寸的第二尺寸界线就是后一尺寸的第一尺寸线,AutoCAD2008把这种类型的尺寸称为( )
A. 基线尺寸 B. 连续尺寸 C. 对齐尺寸 D.
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服务质量的内涵应包括以下哪些内容：（）
A.服务质量是客户感知的对象
B.服务质量既要有客观方法加以制定和衡量，更多地要按客户主观的认识加以衡量和检验
C.服务质量发生在服务生产和交易过程之中
D.服务质量是在服务企业与客户交易的真实瞬间实现的
E.服务质量的提高需要内部形成有效管理和支持系统
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对电压超过（）V的裸露的导电回路并可能造成人身伤害的地方，必须采用防护措施或隔离措施。
A . 12；
B . 24；
C . 36；
D . 50。
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