WAP uses (1) 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 (2) that tells the device receiving the content what to do with it. The best known markup language is Hypertext Markup Language. (3) HTML, WML is considered a meta language. Basically, this means that in addition to providing predefined (4) , WML lets you design your own markup language (5) . WAP also allows the use of standard Internet protocols such as UDP, IP and XML.

2（）

A．packet

B．content

C．text

D．applets

不属于定向运动中确定站立点的方法是（）。

A、直线相交法

B、定点攻击法

C、截线法

D、北对北给地图定向法