你可能感兴趣的试题

下图的最小生成树为（用粗线标注）（）

下图反映的是（）过程。

在某数据库中有如下两个表“院系”和“学生”，试查询每个院系平均成绩最高的学生信息，要求得到的信息包括院系名和最高分学生的平均成绩。正确的命令是（）

（）是系统的第一道防线，用以防止非法数据和非法用户的进ok；它一般装在（）上以保护一个子网。

某一计算机系统连接有三台打印机，其数据传输率分别为：30Mbps，50Mbps，80Mbps。如果采用字节多路通道方式连接这三台打印机，则通道的设计极限流量应不小于（）；如果采用数组多路通道方式连接这三台打印机，则通道的设计极限流量应不小于（）。

All computers need some sort of （） (OS). Tile majority of modem home computers use some form of Microsofts OS. The original Microsoft OS was called DOS though most computers use Windows. Windows comes in various versions beginning with （） 3. x then 95, 98, ME and currently XP. A few computers use IBMs O/S2. Apples Mac uses their own OS beginning with OS I though most modem Macs use version 8. x or 9. x. Apples latest version is OS 10.1. x. In the past large companies and institutions would have an OS design exclusively for them but as the Commercial OS become more sophisticated the benefits of this practice is becoming less apparent. Some computer professionals, （） (ISP) and （） computer users use an OS such as UNIX (or a variant such as Linux), Windows NT or 2000 (Win2k) or one of the other network or  （） based OS.

（） is a collection of web pages connected together with （） . Each document or page has a unique address that allows you to find it among the millions of other documents on the Web. The address is called a （） (URL) or sometimes a Uniform Resource Indicator (URL). When you chose a new link by clicking on it or by typing it into the address field your  （） sends a request for that document and displays it on the screen. That link can be to a different section of the current document, another document on the same website as the original or on another website anywhere in the world. Web pages are designed using （） or HTML.

栈的输入序列是1234，要想得到4321和3421的输出序列，则应进行的运算序列分别是（1）和（2）。（进代表进栈，出代表出栈）

已有下图的“学生”关系，欲不重复的统计在此关系中出现的院系，可以用关系运算（）学生
 

某一计算机系统连接有三台打印机，其数据传输率分别为：30Mbps，50Mbps，80Mbps。如果采用字节多路通道方式连接这三台打印机，则通道的设计极限流量应不小于（）；如果采用数组多路通道方式连接这三台打印机，则通道的设计极限流量应不小于（）。

数据的独立性是指（）是相互独立的；它又可分为（）。

HIPO图实际上由（）组成，它一般用于（）阶段。

在E-R图中，菱形表示（），它本身也可以看作是一种（），所以也是可以有（）的。

All computers need some sort of （） (OS). Tile majority of modem home computers use some form of Microsofts OS. The original Microsoft OS was called DOS though most computers use Windows. Windows comes in various versions beginning with （） 3. x then 95, 98, ME and currently XP. A few computers use IBMs O/S2. Apples Mac uses their own OS beginning with OS I though most modem Macs use version 8. x or 9. x. Apples latest version is OS 10.1. x. In the past large companies and institutions would have an OS design exclusively for them but as the Commercial OS become more sophisticated the benefits of this practice is becoming less apparent. Some computer professionals, （） (ISP) and （） computer users use an OS such as UNIX (or a variant such as Linux), Windows NT or 2000 (Win2k) or one of the other network or  （） based OS.

（） is a collection of web pages connected together with （） . Each document or page has a unique address that allows you to find it among the millions of other documents on the Web. The address is called a （） (URL) or sometimes a Uniform Resource Indicator (URL). When you chose a new link by clicking on it or by typing it into the address field your  （） sends a request for that document and displays it on the screen. That link can be to a different section of the current document, another document on the same website as the original or on another website anywhere in the world. Web pages are designed using （） or HTML.

（）是系统的第一道防线，用以防止非法数据和非法用户的进ok；它一般装在（）上以保护一个子网。

栈的输入序列是1234，要想得到4321和3421的输出序列，则应进行的运算序列分别是（1）和（2）。（进代表进栈，出代表出栈）

数据的独立性是指（）是相互独立的；它又可分为（）。

HIPO图实际上由（）组成，它一般用于（）阶段。

在E-R图中，菱形表示（），它本身也可以看作是一种（），所以也是可以有（）的。

All computers need some sort of （） (OS). Tile majority of modem home computers use some form of Microsofts OS. The original Microsoft OS was called DOS though most computers use Windows. Windows comes in various versions beginning with （） 3. x then 95, 98, ME and currently XP. A few computers use IBMs O/S2. Apples Mac uses their own OS beginning with OS I though most modem Macs use version 8. x or 9. x. Apples latest version is OS 10.1. x. In the past large companies and institutions would have an OS design exclusively for them but as the Commercial OS become more sophisticated the benefits of this practice is becoming less apparent. Some computer professionals, （） (ISP) and （） computer users use an OS such as UNIX (or a variant such as Linux), Windows NT or 2000 (Win2k) or one of the other network or  （） based OS.

（） is a collection of web pages connected together with （） . Each document or page has a unique address that allows you to find it among the millions of other documents on the Web. The address is called a （） (URL) or sometimes a Uniform Resource Indicator (URL). When you chose a new link by clicking on it or by typing it into the address field your  （） sends a request for that document and displays it on the screen. That link can be to a different section of the current document, another document on the same website as the original or on another website anywhere in the world. Web pages are designed using （） or HTML.

在E-R图中，菱形表示（），它本身也可以看作是一种（），所以也是可以有（）的。

All computers need some sort of （） (OS). Tile majority of modem home computers use some form of Microsofts OS. The original Microsoft OS was called DOS though most computers use Windows. Windows comes in various versions beginning with （） 3. x then 95, 98, ME and currently XP. A few computers use IBMs O/S2. Apples Mac uses their own OS beginning with OS I though most modem Macs use version 8. x or 9. x. Apples latest version is OS 10.1. x. In the past large companies and institutions would have an OS design exclusively for them but as the Commercial OS become more sophisticated the benefits of this practice is becoming less apparent. Some computer professionals, （） (ISP) and （） computer users use an OS such as UNIX (or a variant such as Linux), Windows NT or 2000 (Win2k) or one of the other network or  （） based OS.

（） is a collection of web pages connected together with （） . Each document or page has a unique address that allows you to find it among the millions of other documents on the Web. The address is called a （） (URL) or sometimes a Uniform Resource Indicator (URL). When you chose a new link by clicking on it or by typing it into the address field your  （） sends a request for that document and displays it on the screen. That link can be to a different section of the current document, another document on the same website as the original or on another website anywhere in the world. Web pages are designed using （） or HTML.

All computers need some sort of （） (OS). Tile majority of modem home computers use some form of Microsofts OS. The original Microsoft OS was called DOS though most computers use Windows. Windows comes in various versions beginning with （） 3. x then 95, 98, ME and currently XP. A few computers use IBMs O/S2. Apples Mac uses their own OS beginning with OS I though most modem Macs use version 8. x or 9. x. Apples latest version is OS 10.1. x. In the past large companies and institutions would have an OS design exclusively for them but as the Commercial OS become more sophisticated the benefits of this practice is becoming less apparent. Some computer professionals, （） (ISP) and （） computer users use an OS such as UNIX (or a variant such as Linux), Windows NT or 2000 (Win2k) or one of the other network or  （） based OS.

（） is a collection of web pages connected together with （） . Each document or page has a unique address that allows you to find it among the millions of other documents on the Web. The address is called a （） (URL) or sometimes a Uniform Resource Indicator (URL). When you chose a new link by clicking on it or by typing it into the address field your  （） sends a request for that document and displays it on the screen. That link can be to a different section of the current document, another document on the same website as the original or on another website anywhere in the world. Web pages are designed using （） or HTML.