三屏智真系统采用的MIC支持()声道?
A.单声道
B.双声道
C.三声道
D.四声道
参考答案:C
Since we _____ the sunrise in the desert early today, we decided to go to bed earlier than usual last night. [ ]
A. watched
B. had watched
C. were going to watch
D. will be watching
数据模型按不同应用层次分成3种类型,它们是概念数据模型、 【5】 和物理数据模型。