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【单选题】
Advantage of public transport A new study conducted for the world Bank by Murdoch University’s Institute for Science and Technology Policy (ISTP) has demonstrated that public transport is more efficient than cars. The study compared the proportion of wealth poured into transport by thirty-seven cities around world. This included both the public and private costs of building, maintaining and using a transport system. The system found that Western Australian city of Perth is a good example of a city with minimal public transport. As a result, 17% of its wealth went into transport costs. Some European and Asian cities, on the other hand, spent as little as 5%. Professor Peter Newman, ISTP Director, pointed out that these more efficient cities were able to put the different into attracting industry and jobs or creating a better place to live. According to Professor Newman, the largest Australian city of Melbourne is a rather unusual city in this sort of comparison. He describes it as two cities: A European city surrounded by a car-dependent one. Melbourne’s large tram network has made car use in the inner city much lower, but the outer suburbs have some car-based structure as most other Australian cities. The explosion in demand for accommodation in the inner suburbs of Melbourne suggests a recent change in many people’s preferences as to where they live. Newman says that this is a new, broader way of considering public transport issues. The case for public transport bas been made on the basis of environmental and social justice considerations rather than economics. Newman, however, believes that study demonstrates that auto-dependent city model is inefficient and grossly inadequate in economic as well as environmental terms. Bicycle use was not included in the stud but Newman noted that the two most bicycle friendly cities considered-Copenhagen and Amsterdam- were very efficient, even though their public transport systems were reasonable but not special. It is common for supporters of road networks to reject the model of cities with good public transport by arguing that such systems would not work in their particular city. One objection is climate. Some people say that their city could not make more use of public transport because it either too hot or too cold. Newman rejects this, pointing out of public transport has been successful in both Toronto and Singapore and in fact he checked the use of cars against climate and found zero correlation. When it comes to other physical features, road lobbies are on stronger ground. For example, Newman accepts that it would be hard for a city as hilly as Auckland to develop a really good rail network. However, he points out that both Hong Kong and Zurich have managed to make a success of their rail system, heavy and light respectively, though there are few cities in the world as hilly. In fact, Newman believes the main reason for adopting one sort of transport over another is politics: ”The more democratic the process, the more public transport is favored.” He considers Portland, Oregon, a perfect example of this. Some years ago, federal money was granted to build a new rail road. However, local pressure groups forced a referendum over whether to spend the money on light rail instead. The rail proposal won and the railway worked spectacularly well. In the years that have followed, more and more rail system have been put in, dramatically changing the nature of the city. Newman notes that Portland has about the same population as Perth and had a similar population density at the time. Match each city with correct description (A-F) Perth
A.
successfully uses a light rail system in hilly environment
B.
successful public transport system despite cold winters
C.
profitably moved from road to light rail system
D.
hilly an inappropriate for rail transport system
E.
heavily dependent on cars despite widespread poverty
F.
inefficient due to a limited public transport system
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举一反三
【单选题】What is the best way to refute an argument from analogy?
A.
Beg the question
B.
Ignore the analogy
C.
Offer a syllogism
D.
Attack the analogy
【简答题】Derive the expression for Reynolds' mass and momentum transfer ogy:
【单选题】关于“自动色阶”命令,以下说法错误的是( )。
A.
对应的快捷键是Shift+Ctrl+L
B.
不产生对话框,直接将图像中最亮的像素变成白色
C.
不产生对话框,直接将图像中最暗的像素变成黑色
D.
执行该命令时将弹出一个对话框进行相关设置
【单选题】SDH帧结构中安排有两大类开销:段开销(SOH)和通道开销(POH)它们分别用于()的维护。
A.
段层和通道层
B.
段层
C.
通道层
D.
以上都不对
【多选题】下列选项对“色阶”命令的描述正确的是
A.
“色阶”命令能将白色变为黑色
B.
“色阶”命令 能产生图像的反相效果
C.
“色阶”命令中的“自动”相当于“自动色阶”命令
D.
“色阶”命令的快捷键是ctrl+M
E.
“色阶”命令可以针对不同通道进行调整
【单选题】自动色阶命令的快捷键是( )。
A.
Ctrl + M
B.
C trl+Shift+L
C.
Ctrl + L
D.
Ctrl + B
【单选题】自动色阶 命令的快捷键是( )。
A.
Ctrl + M
B.
Ctrl + L
C.
C trl+Shift+L
D.
Ctrl + B
【判断题】SDH的开销分段开销和通道开销两大类。
A.
正确
B.
错误
【简答题】A.hypothesis B.definition C.experiment D.ogy
【单选题】铁路线路纵断面的组成要素为(   )
A.
圆曲线和竖曲线
B.
平道和坡道
C.
竖曲线和坡道
D.
圆曲线和平道
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