()系统主要实现电话呼入、呼出功能。
A、计算机电话集成
B、自动排队机
C、交互式语音应答
D、呼叫管理
参考答案:B
— Let’s buy some cards for our teachers on Teachers’ Day.
— Why not make some by hand? It’s much .
A.interesting B.more interesting C.the most interesting
下列属于氧化物的是[ ]
A.H2O
B.O2
C.NaOH
D.KNO3