问题
选择题
I'm so tired that I any farther. [ ]
A. can hardly walk
B. hardly can walk
C. can walk hardly
D. walk can hardly
答案
答案：A
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I'm so tired that I any farther. [ ]
A. can hardly walk
B. hardly can walk
C. can walk hardly
D. walk can hardly
答案：A
假设磁盘上每个磁道划分成9个物理块，每块存放1个逻辑记录。逻辑记录R0， R1，…，R8存放在同一个磁道上，记录的安排顺序如下表所示。
| 物理块 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 逻辑记录 | R0 | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
A．243ms
B．246ms
C．254ms
D．280ms