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从计算机的功能和软件资源管理的角度来看，操作系统的主要功能包括处理器管理、存储管理、文件管理、设备管理和【 】管理。

答案

参考答案：作业管理

解析：操作系统是管理硬件和软件资源、控制程序运行、改善人机界面和为应用软件提供支持的一种系统软件。从计算机硬件和软件资源管理的角度来看，操作系统的主要功能包括处理器管理、存储管理、文件管理、设备管理和作业管理。

综合

读我国简要铁路干线分布图，完成下列要求：

（1）将图中字母与所代表的铁路枢纽城市及其所交汇的铁路线连接起来：

    A    郑州   京广线与浙赣线
    B兰州兰新线与包兰线
    C株洲京沪线与陇海线
    D徐州京广线与陇海线

（2）从图中找出两条东西走向且可直接与沿海港口城市相通的铁路线_____________、_____________。（3）将新疆的长绒棉从乌鲁木齐运到上海，经过最近的铁路线依次是：_______ ____ _、____________、    ___________。（4）由九江到昆明旅游，主要乘坐火车，应先坐车到________（城市）转入_________线，再先后经过__    _______  线、__________线到达昆明，包括终点站此行共经过______个省级行政中心。 （5）大京九铁路从北京到最终点____    ___，途中唯一经过的省会城市是__    _____。

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问答题

If a heavy reliance on fossil fuels makes a country a climate ogre, then Denmark — with its thousands of wind turbines sprinkled on the coastlines and at sea — is living a happy fairy tale.
Viewed from the United States or Asia, Denmark is an environmental role model. The country is "what a global warming solution looks like," wrote Frances Beinecke, the president of the Natural Resources Defense Council, in a letter to the group last autumn. About one-fifth of the country’s electricity comes from wind, which wind experts say is the highest proportion of any country.
But a closer look shows that Denmark is a far cry from a clean-energy paradise. The building of wind turbines has virtually ground to a halt since subsidies were cut back. Meanwhile, compared with others in the European Union, Danes remain above-average emitters of the greenhouse gas carbon dioxide. For all its wind turbines, a large proportion of the rest of Denmark’s power is generated by plants that burn imported coal.
The Danish experience shows how difficult it can be for countries grown rich on fossil fuels to switch to renewable energy sources like wind power. Among the hurdles are fluctuating political priorities, the high cost of putting new turbines offshore, concern about public acceptance of large wind turbines and the volatility of the wind itself.
"Europe has really led the way," said Alex Klein, a senior analyst with Emerging Energy Research, a consulting firm with offices in Cambridge, Massachusetts.
Some parts of western Denmark derive 100 percent of their peak needs from wind if the breeze is up. Germany and Spain generate more power in absolute terms, but in those countries wind still accounts for a far smaller proportion of the electricity generated. The average for all 27 European Union countries is 3 percent.
But the Germans and the Spanish are catching up as Denmark slows down. Of the thousands of megawatts of wind power added last year around the world, only 8 megawatts were installed in Denmark.
If higher subsidies had been maintained, he said, Denmark could now be generating close to one-third — rather than one-fifth — of its electricity from windmills.
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