Originally introduced by Netscape Communications, (21) are a general mechanism which HTTP Server side applications, such as CGI (22) , can use to both store and retrieve information on the HTTP (23) side of the connection. Basically, Cookies can be used to compensate for the (24) nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based (25) .

23（）

A.Client 

B.Editor 

C.Creator 

D.Server

在某工程电缆布放中，直流电源线与信号线必须（）布放。

A.同束

B.分开

C.交叉

D.无所谓