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  3. As with all ITU standards，reduced energy consumption is a key factor taken into account at development stage.Indeed NGNs are bel

As with all ITU standards，reduced energy consumption is a key factor taken into account at development stage.Indeed NGNs are bel

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问题 As with all ITU standards，reduced energy consumption is a key factor taken into account at development stage.Indeed NGNs are believed to offer significant savings(  )traditional networks．
选项 A、of
B、over
C、at
D、in
答案B
解析 本题考查NGN方面的基础知识。
正如所有的国际电信联盟标准一样，降低能耗是发展中考虑的一个关键因素。相信下一代网络比传统的网络确实能够降低可观的能耗。
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