哺乳期妇女预防急性 * * 炎的主要措施是（）。

A.保持 * * 清洁

B.养成定时哺乳习惯

C.每次授乳排空乳汁

D.及时治疗破损 * *

E.婴儿睡觉时不含 * *

 WebSQL is a SQL-like (1)language for extracting information from the web. Its capabilities for performing navigation of web (2)make it a useful tool for automating several web-related tasks that require the systematic processing of either all the links in a(3),all the pages that can be reached from a given URL through (4)that match a pattern,or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (5)Interface.

空白（3）处应选择（）

A.hypertext

B.page

C.protocol

D.operation