I'm sorry, I _______ my pen at home. [ ]
A. forgeted
B. forgot
C. left
D. leaved
答案:C
磨煤机油泵出口滤网的正常运行方式是什么?
MS开机接入网络时使用哪种逻辑信道:()
A.FACCH
B.RACH
C.SACCH
D.AGCH