某只起诉张某，本案的被告如何确定( )张某为某校教员，其在一家报社出版的报纸上发表了

面包里的孔洞是什么原因所致（　　）

A．蒸气

B．加碱

C．二氧化碳受热膨胀

D．酵母菌解体

I don't find my luggage. Maybe someone has taken it__________.      [ ]

A. by chance                      

B. on purpose      

C. by error                        

D. by mistake

Originally introduced by Netscape Communications, （） are a general mechanism which HTTP Server side applications, such as CGI （） , can use to both store and retrieve information on the HTTP （） side of the connection. Basically, Cookies can be used to compensate for the （） nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based （） .

（） are a general mechanism which HTTP Server side applications.

A．Browsers

B．Cookies

C．Connections

D．Scripts

填写操作票有那些要求？

在关系数据库基本操作中，从表中选择满足某种条件的记录的操作称为______。

A．选择

B．投影

C．连接

D．扫描