Draft business correspondence, Maintain and update filing system, Schedule deputy manager's appointments.
起草商业函电，保存更新档案，安排销售经理日程。
And its principle, correspondence system and software system are mainly discussed.
重点给出系统总体设计及原理、通信系统设计、系统软件设计。
Along with quick development of the correspondence system, the amount of consumer increased quickly.
随着通信系统的迅猛发展，通信用户数量急剧增加。
Along with quick development of the correspondence system, the amount of consumer increased quickly.
随着通信系统的迅猛发展，通信用户数量急剧增加。
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