简述教育法的基本原则。
1670SM最多可提供（）个155M的接口，主架内的P16S1N单元盘是通过（）盘与扩展子架连接的。 ["256；","512；","REMEP16；","CONGIHC；","HCLINK。"]
一长声三短声是拧紧人力制动机的信号，要求列车乘务组拧紧人力制动器。（）
Which capabilities are not supported in DCNM device manager？（） [" manage SNMPv3 security access to switches"," save and copy configuration files and software images"," configure VLANs and Ethernet port channels"," manage 2148T FEX， 2232PP FEX， and 2248TP FEX"," configure FCoE"]
简述土地利用的必然性。
Why does the bgp summary command always carry the as-set keyword？
