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A公司的运维团队建立了支撑关键业务的预防机制、预警机制、反应机制、控制机制和恢复机制,还未实施。应用IT服务评价指标进行计算,其关键业务应急就绪度至少为(  )。
A. 0.2 
B. 0.4 
C. 0.6
D. 0.8
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软题库参考答案:C(仅供参考)

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