A.YahooB.ExploreC.FoxmailD.Outlook Express
A.Yahoo
B.Explore
C.Foxmail
D.Outlook Express
A.Yahoo
B.Explore
C.Foxmail
D.Outlook Express
A、http://www.ndz.com/pageA.html
B、http://www.ndz.com/pageB.php
C、http://www.ndz.com/pageC.jsp
D、http://www.ndz.com/pageD.asp?id=1
A. http://www.yahoo.com
B. http:// www.alltheweb.com
C. http://www.hon.ch
D. http://www.medmatrix.org
A.255.255.255.0
B.255.255.248.0
C.255.255.252.0
D.255.255.0.0。
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