针对传统民用航空器维修口试中学生多教师资源少,以及考试的客观性和公平性难以保证的问题,设计了基于网络的计算机化技能口试系统,利用网络实现了多人同时进行执照技能口试,采取集中评分的形式保证了口试的公平性。此外,研究了口试的大型多媒体试题分发的关键技术,提出了一种新型的UDP结合TCP的应用层可靠组播协议,彻底解决了大型试题的快速分发难题,提高了网络效率。 Aiming at the problem that there are few teachers in the traditional oral test for maintenance of civil aircraft and how difficult it is to guarantee the objectivity and fairness of the test, a web-based computerized skills oral examination system is designed. With the help of network, The form of the score guarantees the fairness of the oral examination. In addition, we study the key technology of oral multimedia test questions distribution and propose a new UDP-TCP reliable application-layer multicast protocol, which can completely solve the problem of rapid distribution of large-scale test questions and improve the network efficiency.