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反射波谱特性曲线

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Continuous availability is required for an application in a two-node cluster. There is one rotating resource group in the cluster， and the nodes are identical machines. Client telnet connections to the application cannot be broken because it takes 20 to 30 minutes to recycle the client workstations and transactions will be lost. What configuration best provides continuous connectivity to the application？（）

A. IPAT using IP Replacement without MAC address takeover.
B. IPAT using IP Aliasing and hardware MAC address takeover.
C. None because continuous telnet connectivity cannot be provided with HACM
D. Shared service IP address assigned to multiple network interface cards on each node.

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稳定混合料成份的措施是什么？

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以下那些是软切换的目的（）。

A. 保证移动用户通话的连续性
B. 实现CDMA网络的无缝覆盖
C. 降低系统掉话率，提高网络质量
D. 增加网络容量，降低网络负担

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环境影响报告书经（），计划部门方可批准建设项目设计任务书。

A. 批准前
B. 批准过程中
C. 批准后
D. 经项目主管部门预审后

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