暂时硬度。
Customer X has a hub-and-spoke Frame Relay network， with a central office and two branch offices （RemoteA and RemoteB）. Each location has only one physical link to the Frame Relay cloud and RemoteB has a router that is not a Cisco router. Since the installation， there is no connectivity between RemoteB and the central office. What is a possible solution to this issue？ （） [" Because Frame Relay IETF encapsulation is only configurable at interface level， you must use IETF encapsulation on all routers."," This is not a possible scenario. A dedicated Frame Relay link to RemoteB is mandatory at the central office."," The router at RemoteB must be replaced by a Cisco router."," Use Frame Relay IETF encapsulation on a per-VC basis on the central office router."," There is a problem in the Frame Relay cloud， because Cisco routers are compatible with IETF Frame Relay."]
弹簧的作用是使分离（）消除因支撑处存有间隙前后旷动而产生的噪声。 ["螺栓","螺母","杠杆","活塞"]
稳定角
伴孢晶体
盒式诱变
