【名词&注释】
可能性(possibility)、程序语言(programming language)、编译程序(compiler)、数据压缩算法(data compression algorithm)、数据量(data quantity)、语法分析器(syntax analyzer)、下推自动机(pushdown automata)、每一个(every single)、顺利进行、语法分析方法(method of grammatical analysis)
[单选题]以下叙述中错误的是()
A. 风管水平安装，直径或边长尺寸大于等于400mm，支，吊架间距不应大于3m
B. 风管水平安装，直径或边长尺寸小于400mm，支、吊架间距不应大于4m
C. 风管垂直安装，支、吊架间距不应大于3m，但每根立管的固定件不应少于2个
D. 风管支、吊架不得设置在风口，阀门、梭查门及自控机构处
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举一反三：
[单选题]信安标委中哪个小组负责信息安全管理工作?()
A. WG1
B. WG5
C. WG7
D. WG8
[单选题]所有编译程序的语法分析器都使用一个(29)，以支持语法分析的顺利进行。
A. 栈
B. 队
C. 树
D. 图
[单选题]We know a computer is a machine that processes data(stored in main memory)into information, under control of a stored program. We also know that, internally, a computer is a binary machine; thus the data and the program instruictions must be stored in binary form. Characters are represented in(71). Numbers are stored as binary numbers, with each bit's positional value significant. A computer's main memory is divided into bytes, words or both(depending on the system), and each of these basic storage units is assigned an(72). Using this address, the processor can read or write selected bytes or words.The processor consists of a clock, an instruction control unit, an arithmetic and logic unit, and registers. Once a program is stored in main memory, the processor can begin to execute it. During(73), the instruction control unit fetches an instruction from main memory; during(74), the arithmetic and logic unit executes it. Precisely timed electronic pulses generated by the clock drive this basic(75)
A. a binary code
B. words
C. registers
D. positional values
[单选题]在选择数据压缩算法时需要综合考虑(35)。
A. 数据质量和存储要求
B. 数据的用途和计算要求
C. 数据质量、数据量和计算的复杂度
D. 数据的质量和计算要求
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