[问答题] 什麽是正向AGC?什麽是反向AGC?
[问答题] 什麽是VLAN?为什麽要进行VLAN划分?
[问答题] 什麽叫界限循环倍率?它的用途是什麽?
[问答题] 什麽是电阻?
[问答题] 控制台电流表指针摆动说明什麽?
[问答题] 什麽是温降值?它的选用与什麽因素有关?
[问答题] 什麽是转借发票?
[问答题] 什麽是伪造发票?
[问答题] 什麽是转让发票?
[问答题] 什麽是拍摄点?