正确答案: B

ITU-T

题目：()定义了智能网的应用协议.

解析：B

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举一反三的答案和解析：

[单选题]1887年，（ ）首先验证了电磁波的存在。

赫兹

[单选题]传统GPRS中的SGSN功能可以映射为EPS架构中哪两个网元功能的组合?()

MME+SGW

[单选题]IPv6 is currently in growing deployment around the world,() Internet address registries (RIRs) began to urge all resource managers to plan rapid adoption and conversion.

since