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WAP uses(71), which includes the Handheld Device Markup Language (HDML) developed by Phone.com. WML can also trace its roots to eXtensible Markup Language (XML). A markup language is a way of adding information to your(72)that tells the device receiving the content what to do with it. The best known markup language is Hypertext Markup Language.(73)HTML, WML is considered a meta. language. Basically, this means that in addition to providing predefined(74), WML lets you design your own markup language(75). WAP also allows the use of standard Internet protocols such as UDP, IP and XML.

A、HTML

B、XML

C、DML

D、WML

时间：2022-01-01 05:51 关键词：

答案解析

D
解析：WAP使用无线标记语言(WML)，包括了由Phone.com开发的手持装置标记语言(HDML)。WML其前身可以追溯到可扩展标记语言(XML)。标记语言是一种添加信息到内容的规范。这个规范告诉接收器该如何处理收到的内容，例如超文本标记语言(HTML)就是广为人知的标记语言。不同于HTML语言，WML是一种meta语言。基本上，这意味着除了预定义标记语言之外，WML允许用户制订自己的标记语言部分。WAP也允许使用标准的因特网协议，例如用户数据报协议(UDP)、网际协议(IP)和可扩展标记语言(XML)。

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