Nowadays, no document is safe any more.
Counterfeiting. once the domain of skilled deceivers that used expensive
engraving and printing equipment, has gone mainstream since the price of desktop
publishing systems has dropped. In ancient times, counterfeiting was a hanging
offence. Today, desktop counterfeiters have little reason to worry about prison,
because the systems they use are ubiquitous (普遍存在的) 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-counterfeiting engineer. His approach is based on detecting imperfections in the print quality of documents. Old-school scientists were able to trace documents to particular typewriters based on quirks (构槽) of the individual keys. He employs a simil A. the quirks of the keys of the typewriters B. the drums and mirrors of the printers C. the subtle flaws of printing devices D. the special skills of the experts 热门试题:[单选题]下列可以适用继续盘问情形的是()
A.打伤他人后到公安机关投案自首的 B.擅自进入铁路防护网被人民警察当场抓住的 C.通缉在逃犯罪嫌疑人被人民警察巡逻抓获的 D.随身携带火药枪被查获且拒不交代姓名、住址的 [单项选择]船舶横摇或纵摇超过(),直升机就难以降落在船舶甲板上。
A. 5° B. 10° C. 15° [简答题]简述DA型多级单吸离心泵的结构特点。
[单选题]下列那种细胞化学染色对急粒与急单的鉴别意义最大 ( )
A. PAS染色 B. ACP染色 C. NAS-DCE染色 D. NAP染色 [简答题]绘图题:试绘出电网调度自动化系统硬件结构简图。
[单项选择]
M: Hello, Amy. Are you coming to my birthday party A. She will be picked up at the station. B. She will be picked up at her own house. C. She will take a train there. D. She will take a bus. [单选题]我们通常所说的ATO是指什么含义()
A.列车自动监控 B.列车自动防护 C.列车自动驾驶 D.列车自动调整 [填空题]
Read the following text and fill each of the numbered spaces with ONE suitable word. Write your answers on ANSWER SHEET 1. There are two basic ways to see growth: one as a product, the
other as a process. People have generally viewed personal growth as an external
result or {{U}} (31) {{/U}} that can easily be identified {{U}} (32)
{{/U}} measured. The worker who gets a promotion, the student {{U}} (33)
{{/U}} grades improve, the foreigner who learns a new language — all these
are examples of people who have measurable {{U}} (34) {{/U}} to show for
their efforts. {{U}} (35) {{/U}} contrast, the process of personal growth
is {{U}} (36) {{/U}} more difficult to determine, since {{U}} (37)
{{/U}} definition it is a journey and not the specific signposts or
landmarks {{U}} (38) {{/U}} the way. The process is not the road itself,
but {{U}} (39) {{/U}} the attitudes and feelings people have, their
caution or courage, as they encounter new
[单项选择]TJWX-2000型微机监测系统每台开关量采集机可输入()路开关量信息。
A. 184 B. 284 C. 384 D. 484 [单选题]具体组织和发动武昌起义的资产阶级革命机构是( )。
A.同盟会 B.文学社和共进会 C.光复会 D.政闻社 [判断题]在调车场推进连挂,被连挂车辆距前方警冲标不足30m时,必须采取防溜和防护措施后方准连挂;不足10m时,必须与有关人员联系、开通前方进路后才能连挂。
A.正确 B.错误 [单选题]对确需长期留置导尿者应持续开放,定时夹闭。 ()
A.正确 B.错误 [多项选择]分化好的恶性瘤通常是()。
A. 早期手术可以根治,预后好 B. 用保守疗法亦可治愈 C. 对放射治疗、化疗不很敏感 D. 不转移 E. 没有局部浸润 [单项选择]实际费用法是工程费用索赔中最常用的一种计算方法,该方法的计算原则是()。
A. 以承包商为某项索赔工作所支付的实际开支为根据 B. 以承包商为某项索赔工作所支付的含税工程造价为根据 C. 以承包商为某项索赔工作所支付的直接工程费为根据 D. 以承包商为某项索赔工作所支付的直接费为根据 [单项选择]存储容量1MB为()。
A. 100KB B. 1024KB C. 8000KB D. 1000KB [单项选择]氧化铁皮压入钢材表面,冷却后氧化铁皮脱落形成()。
A. 耳子 B. 划伤 C. 凸起 D. 凹坑 [单项选择]单台云主机最多挂载()块数据盘。
A. 10 B. 20 C. 50 D. 100 [判断题]关键备件的轴承安装及配合尺寸,可以不留任何记录
A.正确 B.错误 [判断题]双线区间两条线路施工时,只需要对其中一条线均设置移动停车信号灯即可。
A.正确 B.错误 [单选题]患者,女性,55岁,患肝性脑病,护士为其进行口腔护理时,哪种用物不需准备
A.开口器 B.血管钳 C.吸水管 D.手电简 E.压舌板 [单选题]绝缘隔板和绝缘罩只允许在( )及以下电压的电气设备上使用,并应有足够的绝缘和机械强度。
A.10kV B.20kV C.35kV D.66kV [单项选择]A321飞机主仪表板有几块可互换的显示屏?()
A. 6个 B. 4个 C. 2个 D. 5个 [判断题]依法治国是党领导人民治理国家的根本保证。 ( )
A.正确 B.错误 [判断题]配送线路确定后,各个客户或门店的配送顺序也随之而定,如需调整,用手工进行局部调整。
[单项选择]When is Carl’s birthday
A. July 2. B. July 22. C. June 2. [单选题]在带电导线附近使用绑线时,应在下面绕成小盘再带上杆塔。禁止在杆塔上()。
A.卷绕或放开绑线 B.卷绕绑线 C.放开绑线 D.使用绑线 E.略 F.略 [单项选择]适用于手外科、整形外科、骨科的手术显微镜应具备()
A. 具有同轴照明的冷光源,且亮度固定不变 B. 变倍时视野保持清晰,需变倍调焦 C. 工作距离200~300mm,可根据需要进行调节 D. 安装在支架上固定不动 E. 放大倍数为8~20倍 [填空题]
[简答题]如何正确使用半自动缓解阀?
[单选题]雕品题材应满足宾客风俗习惯,如( )人忌用黄色。
A.印度人 B.日本入 C.英国人 D.法国人 [判断题]值班监控员应及时在缺陷管理记录中填写验收情况并完成归档。
A.正确 B.错误 [单选题]袁世凯复辟帝制,举行登基大典是在( )
A.1915年 B.1916年 C.1917年 D.1918年 [单选题]表面活性剂对难溶性药物增溶主要是利用了
A.胶团作用 B.乳化作用 C.润滑作用 D.去污作用 E.降低表面张力作用 [填空题]科学确定疏散物资( ),避免现场车辆和人员拥挤形成安全隐患。A进出路线 B放置部位 C先后顺序 D分类情况
[单选题]下列不属于预算定额编制依据的是﹒
A. 全国统一劳动定额 B.现行的设计规范 C. 概算指标 D.通用的标准图集 [判断题]列尾装置在使用前,不须进行检测,方可投入运用。《技规》第255条
A.正确 B.错误 [简答题]简述如何用G92设定浮定坐标系。
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