甲和乙采用公钥密码体制对数据文件进行加密传送，甲用乙的公钥加密数据文件，乙使用 （47） 来对数据文件进行解密。

（47）

A query is used to search through the database to locate a particular record or records,which conform. to specified （75） .

（75）

Firewall is a （74） mechanism used by organizations to protect their LANs from the Internet.

（74）

A Web （73） is one of many software applications that function as the interfacebetween a user and the Internet.

（73）

（72） is the conscious effort to make all jobs similar, routine, and interchangeable.

（72）

An （70） statement can perform. a calculation and store the result in a variable sothat it can be used later.

（70）

Each program module is compiled separately and the resulting （71） files are linkedtogether to make an executable application.

（71）

In C language, （69） are used to create variables and are grouped at the top of aprogram block.

（69）

（68） are those programs that help find the information you are trying to locate onthe WWW.

（68）

In C language, a （67） is a series of characters enclosed in double quotes.

（67）