某交换机端口原属于VLAN5,现在用undovlan5命令删除VLAN5后,这个端口属于哪一个VLAN().
A.0
B.1
C.1023
D.1024
参考答案:B
He _____ at the last party. He felt sorry for it.[ ]
A. makes some mistakes
B. make a mistake
C. made few mistakes
D. made many mistakes
为什么说21世纪将迎来照明产业自爱迪生发明白炽灯以来又一次产业革命?