______ 是指在原有系统停止运行的某一时刻_新系统立即投入运行，中间没有过度阶段。 - 查题网

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高等继续教育 / 管理信息系统

______ 是指在原有系统停止运行的某一时刻_新系统立即投入运行，中间没有过度阶段。

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管理信息系统

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