拆卸模板、脚手架、起重机械时，应在地面设置警戒区，并设（），警戒区内不得有其他人员进入和停留。
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A Power 720 customer using IVM wants to implement dual VIO servers, but is unable to create the second server. What is the most likely reason for this?（）
An HMC is required for dual VIO servers.
B. Dual VIO servers require a split backplane.
C. A dual VIO enablement code must be entered from the ASMI interface.
D. The second VIO server must be created using the IVM command line interface.
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