问题
名词解释
非剥夺调度
答案
参考答案：
调度程序一旦把处理机分配给某进程后，便一直让它执行，直至该进程完成或因发生莱事件而阻塞时，才又把处理机分配给另一进程。这种调度方式的优点是实现简单、系统开销小，但系统性能不够理想。
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非剥夺调度
参考答案：
调度程序一旦把处理机分配给某进程后，便一直让它执行，直至该进程完成或因发生莱事件而阻塞时，才又把处理机分配给另一进程。这种调度方式的优点是实现简单、系统开销小，但系统性能不够理想。
Finding the resources to meet this demand in a ___小题2:___, sustainable way is the basis of our nation's energy security, and will be one of the major ___小题3:___of the 21st century. Alternative forms of energy- bio-fuels, wind and solar are ___小题4:____ being funded and developed, and will play a growing___小题5:___ in the world's energy supply. But experts say that even when combined, alternative energy sources will likely meet only about 30% of the world's energy needs by 2050. For example, even with ___小题6:___ investments, such as the $93 million for wind energy development ___小题7:___ in the American Recovery and Reinvestment Act, important alternative energy sources such as wind and bio-fuels __小题8:___ only about 1% of the market today. Energy and sustainability experts say the answer to our future energy needs will likely come from a lot of ___小题9:___ both traditional and alternative. |