MPLS VPN的RD类似于BGP中扩展团体属性,用于路由信息的分发。
参考答案:错
I think _____ important to listen carefully to the teacher in class. [ ]
A. very
B. that
C. it
D. too
轴针式喷油器与孔式喷油器仅()和()结构略有不同。