试题与答案

(1)竖起井架 (2)连接钻桥 (3)喷出原油 (4)决定钻孔位置 (5)取出岩芯分

题型:单项选择题

题目:

(1)竖起井架 (2)连接钻桥 (3)喷出原油 (4)决定钻孔位置 (5)取出岩芯分析

A.1-2-4-3-5

B.4-1-2-5-3

C.2-1-4-5-3

D.4-2-1-3-5

答案:

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参考答案:间隙可以存放的字符数是:800个字符/英寸×0.6英寸=480个字符 a.采用不成组操作时,一个逻辑记录作为一个物理存储块,因此,磁带空间的利用率是:160÷(480+160)=25%,即不采用成组操作时,磁带空...

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