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下图中计算机硬件系统基本组成部件与①、②、③、④和⑤的名称为（）。

 

在微型计算机中，通常用主频来描述 CPU的（6）；对计算机磁盘工作影响最小的因素是（ 7）。

RS-422有（35）根数据信号线；而 RS-485最少有（36）根数据信号线。

计算机在一个指令理周期中，为了从内存读取指令操作码，首先需要将（ 27）的内容送到地址总线上。执行直接转移指令时，该指令中的转移地址被送入（ 28）。

操作系统在（ 46）向用户提供目录管理类命令、文件操作类命令、文件管理类命令；操作系统在（ 47）向用户提供创建文件、撤销文件、打开文件、关闭文件、读文件、写文件等系统调用。

下列有关数据存储结构的叙述中，正确的是“（44）”和“（ 45）”。

下图是 HTML文件 test.html在 IE中的显示效果，实现图中①处效果的 HTML句是语（68），实现图中②处效果的 HTML语句是（69），实现图中③处效果的 HTML语句是（70）。

操作系统是裸机上的第一层软件，其他系统软件（如（ 22）等）和应用软件都是建立在操作系统基础上的。下图①②③分别表示（23）。

下列网络互连设备中，属于物理层的是（ 66），属于网络层的是（67）。

Why is（71）fun What delights may its practitioner expect as his reward First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the（72）nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes （73）, sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The（74）, like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures. Yet the program（75）, unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

下图是 HTML文件 test.html在 IE中的显示效果，实现图中①处效果的 HTML句是语（68），实现图中②处效果的 HTML语句是（69），实现图中③处效果的 HTML语句是（70）。

在微型计算机中，通常用主频来描述 CPU的（6）；对计算机磁盘工作影响最小的因素是（ 7）。

操作系统是裸机上的第一层软件，其他系统软件（如（ 22）等）和应用软件都是建立在操作系统基础上的。下图①②③分别表示（23）。

计算机在一个指令理周期中，为了从内存读取指令操作码，首先需要将（ 27）的内容送到地址总线上。执行直接转移指令时，该指令中的转移地址被送入（ 28）。

操作系统在（ 46）向用户提供目录管理类命令、文件操作类命令、文件管理类命令；操作系统在（ 47）向用户提供创建文件、撤销文件、打开文件、关闭文件、读文件、写文件等系统调用。

RS-422有（35）根数据信号线；而 RS-485最少有（36）根数据信号线。

下列有关数据存储结构的叙述中，正确的是“（44）”和“（ 45）”。

下列网络互连设备中，属于网络层的是（67）。

下图是 HTML文件 test.html在 IE中的显示效果，实现图中①处效果的 HTML句是语（68），实现图中②处效果的 HTML语句是（69），实现图中③处效果的 HTML语句是（70）。

Why is（71）fun What delights may its practitioner expect as his reward First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the（72）nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes （73）, sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The（74）, like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures. Yet the program（75）, unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

Why is（71）fun What delights may its practitioner expect as his reward First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the（72）nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes （73）, sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The（74）, like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures. Yet the program（75）, unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

Why is（71）fun What delights may its practitioner expect as his reward First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the（72）nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes （73）, sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The（74）, like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures. Yet the program（75）, unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

Why is（71）fun What delights may its practitioner expect as his reward First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the（72）nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes （73）, sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The（74）, like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures. Yet the program（75）, unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.