题目内容

现有如下作业序列:作业1(提交时间8:00,运行时间1.00);作业2(提交时间8:30,运行时间3.00);作业3(提交时间9:00,运行时间0.10);作业4(提交时间9:30,运行时间0.50)(单位:小时,以十进制计)。试用先来先服务和短作业优先调度算法处理该作业序列。问哪种作业调度算法性能更好。

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凡需求量D、提前订货时间t全部为确定已知的存储问题所构成的存储模型为确定型。

A. 对
B. 错

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A. 对
B. 错

文件系统中源程序是有结构的记录式文件。()

A. 对
B. 错

The energy problem is not merely a short-term crisis. Geologists 【1】 that 80 percent of all the oil 【2】 in the US will be used 【3】 before the year 2000. We might even come to the end of our coal reserves, abundant as they are, before another century is over. Americans have been 【4】 this situation suddenly. Many unprepared even to recognize 【5】 , and most of us are unprepared to meet it. We are unprepared 【6】 our habits and traditions, and our national life 【7】 based on a history of material abundance. With about 6 percent of the world’’s 【8】 ,we in the US 【9】 nearly 50 percent of the world’’s energy resources. Such resources within the us 【10】 are still ample by any standards except our own.

A. design
B. way
C. style
D. method

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