基于实践，介绍了网页式课件中，利用层来实现多级结构图的演示及注释说明式图片的一种方法。

Based on practice, introduces a way how to implement a dynamic showing of multilevel structure map and remark map by layer in homepage courseware.

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许多主题在这本书各处承担你已经了解网络通信协定的目的，邮件服务、主机名称和IP位址管理，网页式服务和更多。

Many themes throughout this book assume that you already understand the purpose of network communication protocols, mail services, host name and IP address management, Web services, and more.

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让你的网页使用推拉式营销策略！

Using Push and Pull Marketing Strategies for Your Websites

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