这个类使用了一个 Zend_Http_Client 对象，该对象是与必要的用户身份认证信息一起提供的，用于打开一个到 Google Contacts 服务的已验证连接。

This class makes use of a Zend_Http_Client object, which is provided with the necessary user authentication information and used to open an authenticated connection to the Google Contacts service.

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提供包含M、N、O类的车辆和摩托车检测认证服务。

Providing test and certification services including m, n, o vehicles and motorcycles.

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最后，重点介绍基于多级管理的动态口令系统中的中央管理服务器、通信管理服务器和认证服务器这三类核心节点的设计与实现。

Finally, introduced the design and implement of the three core nodes in the new system, including center management server, communication management server and authentication server.

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