A.系統(tǒng)板故障 B.電源電壓過低 C.有故障的3270鍵盤卡 D.視頻適配器故障
A.一對(duì)多 B.點(diǎn)對(duì)點(diǎn) C.Cellular(細(xì)胞) D.Mesh(網(wǎng)絲,網(wǎng)格)
A.IrDA(紅外線) B.802.11a C.ATM(異步傳輸模式) D.RS-232