They ______us by two to one in the game yesterday.
A.beat
B.defeat
C.gained
D.won
答案:A
发生事故需要停泵时,停泵应按什么顺序作业?
IP对比E1优势()
A.带宽稳定
B.QOS有保障
C.数据保密性、安全性较好
D.成本低,线路可共享