电压互感器二、（）侧应接地。

A. 弹性悬架
B. 刚性悬架
C. 无悬架
D. 挠性悬架

A. 原子
B. 轻子
C. 夸克
D. 媒介子

A. The edge routers can use any locally configured IPv6 address.
B. Hosts and routers inside a 6to4 site will need a special code.
C. An edge router must use IPv6 address of 2002::/16 in its prefix.
D. IPv4 traffic is encapsulated with an IPv6 header.