耶稣降生在哪里？
You are the network administrator of an enterprise company that just deployed a global IP telephonyenvironment. 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.。
直接影响
气动活塞式执行机构振荡的原因是什么？应如何处理？
组织目标
声波透射法检测时，换能器在声测管内一般用（）耦合。
