文件系统中常采用的物理结构有哪些?简述各种结构的分配方式。

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问题:

文件系统中常采用的物理结构有哪些?简述各种结构的分配方式。

考点:计算机基础计算机基础题库
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解方程:

(1)3x2+6x-4=0;(2)(2x+1)2-(2-x)2=0

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情景交际。
     Millie 正和Jill谈论她家附近的一个新公园,你能根据上下文,选择合适的句子将她们的
对话补充完整吗?
(M = Millie, J = Jill They are classmates.)
M: Hello, Jill! 1. _____.
J: 2._____. Is it very big?
M: No, it's not very big, 3._____
J: Well, what's in it? Are there any lakes?
M: Yes, there is a lake. 4._____
J: Is there a zoo?
M: No, there isn't. But there are many birds in it, and there are lots of flowers too.
J: 5._____
M: There isn't a shop in the park, but there are some small shops near the park.
A. but it's beautiful.
B. Oh, that's nice.
C. What about shops?
D. And there are many trees around the lake.
E. There is a new park near my house.
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19世纪的英国,时间是一个全新的概念,人们以分钟、秒为单位,对这一现象的合理解释是

A.钟表的发明使社会观念发生变化

B.工业革命使人们生活节奏加快

C.资本家以秒来计算工人工资

D.工业文明完全取代了农业文明

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第二三层二:青青子衿,悠悠我心。但为君故,沉(沈)吟至今。呦呦鹿鸣,食野之苹。我有嘉宾,鼓瑟吹笙。三:明明如月,何时可掇?忧从中来,不可断绝。越陌度阡,枉用相存。契阔谈讌,心念旧恩

“明明如月,何时可掇”比喻的寓意?

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IP服务的三个特点是:不可靠、面向非连接和______。

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