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问题 单项选择题

如果潜油电泵井产能较低，特别是在较寒冷地区的低温时节，或出液较稠、需要掺水伴热时，就可改（）生产流程为单管生产流程。

A.双管

B.多管

C.三管

D.油管

答案

参考答案：A

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书面表达。
        以下表格是对青少年问题的问卷调查。请根据表格提供的信息，选择其中的三条，写一篇
100个词左右的调查报告，并给出解决问题的建议。调查报告的开头已经给出。
               Problems                                         Causes
Feeling stressedtoo much homework; don't have enough time for their hobbies
Getting short-sighted (近视的)too much homework; bad reading and writing habits
Fighting with each otherdon't know how to get on well with classmates
Feeling tired of studycomputer games' bad influence
Getting fathaving more pocket money to buy snacks; dislike doing exercise
      According to our survey, many teenagers have problems as grown-ups, but if they can solve the
problem properly, they can develop better.                                                                                    
                                                                                                                                                
                                                                                                                                                
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单项选择题

计算机性能评价有多种方法，在关于各种性能评价方法的描述中，不正确的是 (33) 。

A．用MIPS 来比较体系结构不同的计算机的运算速度可能会得出错误的结论

B．吉布森（Gibson）混合比例计算法会受到cache 命中率和流水线效率的影响而出现测量偏差

C．PDR 方法测量的是指令执行的平均时间，它可以全面反映计算机的性能指标

D．CPT 方法计算的是每秒百万次理论运算（MTOPS），因而叫做综合理论性能
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