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简答公路、道路交通噪声防治对策。

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参考答案:

公路、城市道路交通噪声防治措施可通过不同选线方案饿声环境影响预测结果,分析敏感目标受影响的程度,提出优化的选线方案建议;根据工程与环境特征,给出局部线路调整、敏感目标搬迁、临路建筑物使用功能变更、改善道路结构和路面材料、设置声屏障和对敏感建筑物进行噪声防护等具体的措施方案及其降噪效果,并进行经济、技术可行性论证;在符合《城乡规划法》中规定的可对城乡规划进行修改的提下,提出城镇规划区段线路与敏感建筑物之间的规划调整建议;给出车辆行驶规定及噪声监测计划等对策建议。

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"This is a really exciting time—a new era is starting," says Peter Bazalgette, the chief creative officer of Endemol, the television company behind "Big Brother" and other popular shows. He is referring to the upsurge of interest in mobile television, a nascent industry at the intersection of telecoms and media which offers new opportunities to device-makers, content producers and mobile- network operators. And he is far from alone in his enthusiasm.

Already, many mobile operators offer a selection of television channels or individual shows, which are " streamed" across their third-generation (3G) networks. In South Korea, television is also sent to mobile phones via satellite and terrestrial broadcast networks, which is far more efficient than sending video across mobile networks; similar broadcasts will begin in Japan in April. In Europe, the Italian arm of 3, a mobile operator, recently acquired Canale 7, a television channel, with a view to launching mobile-TV broadcasts in Italy in the second half of 2006. Similar mobile-TV networks will also be built in Finland and America, and are being tested in many other countries.

Meanwhile, Apple Computer, which launched a video-capable version of its iPod portable music-player in October, is striking deals with television networks to expand the range of shows that can be purchased for viewing on the device, including "Lost", "Desperate Housewives" and "Law & Order". TiVo, maker of the pioneering personal video recorder (PVR), says it plans to enable subscribers to download recorded shows on to iPods and other portable devices for viewing on the move. And mobile TV was one of the big trends at the world’s largest technology fair, the Consumer Electronics Show, which took place in Las Vegas this week.

Despite all this activity, however, the prospects for mobile TV are unclear. For a start, nobody really knows if consumers will pay for it, though surveys suggest they like the idea. Informa, a consultancy, says there will be 125 million mobile-TV users by 2010. But many other mobile technologies inspired high hopes and then failed to live up to expectations. And even if people do want TV on the move, there is further uncertainty in three areas: technology, business models and the content itself.

Paragraph 2 is written to()

A. indicate the test of mobile-TV networks

B. illustrate the widespread interests in mobile TV

C. stress the selection of television channels

D. assess the third-generation (3G) networks