微电脑的出现，推动计算机迅猛发展。据统计，全世界2000年的计算机装机总数与1999年底相比增长17%，其中美国居世界首位，占有7420万台，日本次之，占有1220万台，德国第三，占有1040万台，其他的国家合计占有7620万台。
美国的计算机装机总量与日本、德国装机总和的比是（日本、德国装机总和的单位为1）（）。| The graceful wooden windmills—a
national symbol like wooden shoes and tulips—that have broken up the flat Dutch
landscape for centuries yielded long ago to ungainly metal-pole
turbines. Now, windmills are breaking into a new frontier. Though still in its teething stages, the "urban turbine" is a high-tech windmill designed to generate energy from the rooftops of busy cities. Lighter, quieter, and often more efficient than rural counterparts, they take advantage of the extreme turbulence and rapid shills in direction that characterize urban wind patterns. Prototypes have been successfully tested in several Dutch cities, and the city government in the Hague has recently agreed to begin a large-scale deployment in 2003. Current models cost US$8, 000 to US$12, 000 and can generate between 3,000 and 7,000 kilowatt hours of electricity A. It is a windmill put on rooftops of buildings for energy generation. B. It is a high-tech machine designed to generate energy for urban people. C. It is light and quiet and therefore more efficient. D. It is driven by urban wind. [简答题]柴油发电机房布置在民用建筑内时,应符合哪些规定?简述出5项即可。
[多选题]遇专、特运及节假日、新运行图实施前，设备管理单位对行车设备（），检查结果在《行车设备（）登记薄》内登记。
A.进行检查 B.全面整修 C.施工 D.检查 [单项选择]要建立幼儿教育的社会协调体系，政府重视是（）。
A. 关键 B. 难点 C. 前提 D. 基础 [单选题]水生植物如菱角，荸荠等可能有（ ）污染，不要生食。
A.肺吸虫病 B.姜片生囊幼 C.涤虫病 D.蛔虫病 [填空题]电力机车、动车组司机应熟练所掌握担当区段“禁停标”的分布情况，作业中加强瞭望，严禁在禁停标标注的区域内( )。
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