在软件工程过程中围绕工程设计，工程支持和工程管理应当遵循什么基本原则？
数据挖掘中数据过程质量是指（） ["数据的加密质量","数据使用质量","数据存储质量","数据传输质量"]
Which of the following commands cannot use the functionality assosciated with theNLS_DATE_FORMAT variable？（） ["RESTORE","RECOVER","REPORT","BACKUP"]
变电站的继电保护装置（），退出等操作，须由变电站（）负责执行。
Refer to the exhibit. A customer indicates their teleworkers plan to use IP phones in their home offices. The IT department has surveyed the planned teleworkers, resulting in the user groupings shown in the exhibit. To provide the highest voice quality, the best recommendations to this customer are（）. ["Deploy all three groups with a QoS service policy, choosing the parameters for Traffic Shaping based on the average uplink speed across the three groups. ","Teleworkers in Groups A and B should inquire with their DSL providers for subscriptions with higher uplink bandwidths. ","Teleworkers in Group C should change their subscriptions to DSL for deployment consistency.","Teleworkers in Group A should upgrade their subscription to obtain static IP addresses ","Teleworkers in Group A should inquire with their DSL providers for subscriptions with higher downlink bandwidths."]
什么是软件的生存周期？如何划分软件的生存周期？
