试题详情

The ground cable letter N shall be used as a suffix to the wire identification code to identify any wire or cable that completes the circuit to the ground network.

A接地电缆字母N应用作电线识别码的标识,以识别完整的接地电网中的任何电线或电缆;

B接地电缆字母N应用作电线识别码的后缀,以识别完成接地电网的任何电线或电缆;

C接地电缆字母N应用作电线识别码的,以识别完成接地网络电路的任何电线或电缆;