71、After acceptance and formal transfer of information systems to customers it has entered the stage of ()
A、preparation B、operation and maintenance
C、development D、extinction
尚大教育-分析:
客户接受信息系统正式可交付成果后,项目进入()阶段
A、准备 B、运维 C、开发 D、消亡
尚大教育-参考答案:B
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