旅客不能按票面指定的日期、车次乘车时，在不延长客票有效期的前提下，可以在任何售票点办理提前或改晚乘车签证手续。（）
氧化还原反应
Refer to the exhibit. When running EIGRP, What is required for RouterA to exchange routing updates with RouterC?（） As numbers must be changed to match on all the routers.。 Loopback interface must be configured so a DR is elected.。 The no auto-summary command is needed on Router A and Router C.。 Router B needs to have two network statements, one for each connected network.。
在对泵轴进行维修时，如被动轴有明显单面磨损，可将其压出，把磨损面调转（）度 180。 100。 70。 270。
An expanding company is deploying leased lines between its main site and two remote sites. Thebandwidth of the leased lines is 128kb/s each，terminated on different serial interfaces on the main router.These links are used for combined VOIP and data traffic. The network administrator has implemented a VOIP solution to reduce costs，and has therefore reserved sufficient bandwidth in a low latency queue oneach interface for the VOIP traffic. Users now complain about bad voice quality although no drops areobserved in the low latency queue. What action will likely fix this problem？（） mark VOIP traffic with IP precedence 6 and configure only fair-queue’ on the links。 configure the scheduler allocate 3000 1000 command to allow the OoS code to have enough CPU cycles。 enable class-based traffic shaping on the VOIP traffic class。 enable Layer 2 fragmentation and interleaving on the links。 enable Frame Relay on the links and send voice and data on different Frame Relay PVC。
对于不需要（）个工日就可以修复的房屋，一般不计入损坏房屋间数，只统计其经济损失。
