A.开始菜单
B.控制面板
C.网上邻居
D.Microsoft Outlook
A.Install antivirus applications on the clients and the e-mail server
B.Filter out all attachments from e-mail messages at the e-mail server
C.Filter out all attachments from e-mail messages at the e-mail server, and install antivirus applications on the clients
D.Install personal firewalls in the e-mail server and on each client