● In  （74） , the only element that can be deleted or removed is the one that was inserted most recently.

    （74）

● Most  （75）   measures involve data encryption and password.

（75）

● A （72）   consists of the symbols, characters, and usage rules that permit people to communicate with computer.

（72）

● In  （74） , the only element that can be deleted or removed is the one that was inserted most recently.

    （74）

●  （73）   software, also called end-user program, includes database programs, word processors, spreadsheets etc.

（73）

● A  （71）   is a functional unit that interprets and carries out instructions.

（71）

● 在

（70）

● 在一个图像上建立多个链接，可以采用 （68） 。

（68）

● 下面设置框架的 HTML 代码将浏览器窗口分为 （69） 个部分。

（69）

● 在 http://www.test.com/main/index.htm中，test.com是 （65） 。

（65）

● HTTP默认的 TCP端口号是 （66） 。

（66）