单项选择题
A.30;64B.16;128C.30;128D.16;64
A.-39V~-72VB.-45V~-60VC.-30V~-72VD.-39V~-60V
A.PACKET CHANNEL REQUESTB.PACKET CONTROL ACKC.PACKET RESOURCE REQUESTD.PACKET UL REQUEST
A.T3191B.T3169C.T3193D.T3195
微信扫一扫,加关注免费搜题