垄断优势理论
清朝以前对外交往的重大事件有哪些？
美国课程专家麦克尼尔将课程实施的策略分为三种：（）的策略。
You are the network administrator of an enterprise company that just deployed a global IP telephony environment. In order to guarantee good voice quality， you asked your provider to implement QoS on the CE routers of your MPLS network. On your LAN， you have also deployed QoS. Users， however， keep complaining about bad voice quality， and the provider does not see matches on the DSCP values that you have asked him to match upon. What is most likely the problem？（） ["The phones are not sending traffic with the correct DSCP value.","The Cisco CallManager is not marking the traffic correctly.","This is most likely a bug on the CE routers.","Your LAN QoS is incorrectly configured."]
企业核心能力的概念及特征？
内部化理论
