分布式控制系统使用了（）现代高科技最新技术成就。

A.计算机及通信技术

B.CRT显示技术

C.自动控制技术

D.以上都是

WebSQL is a SQL-like (26) language for extracting information from the web. Its capabilities for performing navigation of web (27) make it a useful tool for automating several web-related tasks that require the systematic processing of either ail the links in a (28) , all the pages that can be reached from a given URL through (29) that match a’ pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (30) Interface.

A．hypertext

B．page

C．protocol

D．operation