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大型国际赛事对客运枢纽的要求较高,客运枢纽既要满足城市功能和交通功能,又要满足赛事期间的服务功能和保障功能。以2022年北京冬季奥运会配套设施——崇礼客运枢纽为例,从设计理念和原则、规划定位和建设规模、交通组织、场站功能布局、站房建筑等方面,探索了大型国际赛事条件下客运枢纽设计策略。 相似文献
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历届的大赛车,都离不开事故。每当赛车贴着护栏呼啸而过时,赛车手精准的操控决定着自己能否安全完赛,但也有被对手撞的可能,所以在这条复杂的街道赛中,成败就在瞬间。去年大赛车,共有来自33个国家和地区159名选手将要在此角逐。总共6项赛事,其中3项为官方国际汽联世界杯。 相似文献
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2002年2月8日至24日,第19届冬奥会在美国犹地州盐湖城举行。赛事组织者在该届冬奥会中,成功地运用了特殊事件的交通组织与管理论框架,展现了其先进的交通管理方法和技术手段,取得了较好的效果,得到了与会者的好评,作为理大事件交通组织与管理的成功典范,第19届盐湖城冬奥会的交通组织与管理方法,值得2008年北京奥运会学习借鉴。 相似文献
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Motor vehicle crashes are a leading cause of death in the United States. Wyoming initiated a safety study to investigate the underlying causes of high crash rates since it has one of the highest fatality rates in the nation. Research has shown relationships between increased enforcement activity and road crash/fatality reduction. However, little research has attempted to quantitatively measure the impact of various forms of police enforcement, such as the percentage of enforcement time and the quantity of resources, on fatality rate. Therefore, this study was set forward to fill this gap. Data from the highway patrol in Wyoming and the surrounding states were used in this study. Although Wyoming and these nearby states have very similar features in terms of geography and weather, they are different in terms of road mileage and traffic. Therefore, the data was normalized based on highway mileage and miles traveled. Enforcement efforts were compared in terms of allocated enforcement budget, number of sworn officers, and time spent patrolling. The results indicated that there are negative relationships between fatality rate and budget, number of officers, and active hours on the field. This paper also investigated which variable is the best predictor of fatality rate. The results indicated that time spent on the field by highway patrol officers is the best indicator of fatality rate. It was found that although some states like Wyoming have a higher number of sworn officers, they spend less time actively enforcing highway safety. This study provides information needed for authorities to allocate more funding to the highway patrol, and for the highway patrol to spend more time on the road. 相似文献
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通过低气压试验箱模拟高原不同海拔地区气压环境,研究了低气压对引气混凝土含气量及气孔结构的影响.试验结果表明:环境气压的降低将显著削弱引气剂的引气能力,当搅拌气压降低至50 kPa时,混凝土含气量降低约20%~49%;混凝土含气量随环境气压降低呈线性减少,初始含气量越高,随环境气压降低含气量减少速率越大;混凝土塌落度越大,其抵抗因环境气压降低造成含气量降低的能力越强;低气压下搅拌后硬化的混凝土气孔结构参数整体要劣于常压下搅拌的硬化混凝土,具体表现为气泡间距系数偏大,单位体积气泡数量较少,气泡比表面积以及气泡平均直径增大的特点,但总体上看,当混凝土含气量达到一定值后,低气压下硬化混凝土的气泡间距系数可达到在200~300μm之间. 相似文献
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1、记得10多年前上大学时,我爸有辆Yamaha FZII。他托朋友在塘沽买的,朋友以低得难以想象的价格帮他入手后,他竟然一个人跑去塘沽,亲自把那车骑回太原。足见他对这车的喜爱,回来后仔细保养好生伺候是自不必说。当时已经念大学的我非常的不爽:你个老头子每天骑个街车在大街上逛,也不说给你正年轻潇洒的儿子骑着泡个妞啥的。我爸只让我在家附近的荒凉的高新技术开发区骑一骑,而且不许离开他的视线,否则就不再给我骑。这种鸟不拉屎的地方哪有漂亮姑娘啊!我要的是露着大腿踩着高跟的姑娘坐在后座上搂着我的腰,嗯,胸部还紧紧贴着我的后背啊!有木有? 相似文献
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本文介绍Cummins公司研制的空-空中冷系统,并成功地应用在L10柴油机上。该系统明显地优于水-空中冷系统,并改善了柴油机的性能。 相似文献
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从整车鼓风机电流表现,利用台架标定得到空调系统风量和流道阻力的关系,进而得到整车空调系统鼓风机工作点,为系统的优化和改进提供帮助和借鉴。 相似文献
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盛夏来临,炎炎烈日下,不开空调的汽车车内温度能够达到40℃左右,打开车门热气扑面而来,此时汽车空调就显得十分重要,1台保养良好的汽车空调能够在短短3~4min内就可以把温度降到感觉舒适的程度。但是如何使汽车空调时刻处于良好 相似文献
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汽车自动空调系统的主要任务是根据设置在车内外的各种温度传感器的输出信号,由ECU进行处理,对进气转换风扇、送气转换风扇、混合风门、压缩机、鼓风机等进行自动控制,按照操作者的输入指令,调节车厢内的温度、湿度等,使车舱内的 相似文献