On a(72) memory system, the logical memory space available to the program is totally independent of the physical memory space.

When saving a document you must decide on a name for the document and the(75) where it will be saved to.

DBMS will "manage "the stored data items and assemble the needed items from the(74) database in response to the queries of those who aren't programmers.

On a(72) memory system, the logical memory space available to the program is totally independent of the physical memory space.

(73) is a device which enables digital microcomputers to communicate across analog telephone lines.

Printers, plotters are(71 ) device.

某企业经常需要进行大量的复杂的数据处理，在数据处理的过程中，需要注意的事项不包括()。

与计算机操作员相比，信息处理技术员的岗位能力要求不包括(69)。

制作用于工作报告的演示文稿时，不宜(68)。

设在Access中已建立一表并打开，现进行如下操作。  ①将鼠标光标置于某记录最左侧的灰色方格中并使光标变为箭头状。  ②单击，选择整条记录，按[Del]键。  ③在弹出的对话框中单击[是]按钮。  对此表的影响是()。

关系数据库是(65)的集合，它由一个或多个关系模式定义。