【单选题】During the 1990s, the price of SUVs rose and each year more were purchased. This event suggests that ________.
A.
there must have been technological advances in the way SUVs were produced.
B.
the “law of demand” does not hold in this market.
C.
there must have movement leftward along the supply curve for SUVs.
D.
there must have been a rightward shift of the demand curve for SUVs.
【单选题】在音频数字化的过程中,对模拟语音信号处理的步骤依次为:
【简答题】5—21假定使用连续ARQ协议中,发送窗口大小是3,而序列范围[0,15],而传输媒体保证在接收方能够按序收到分组。在某时刻,接收方,下一个期望收到序号是5.试问: (1)在发送方的发送窗口中可能有出现的序号组合有哪几种? (2)接收方已经发送出去的、但在网络中(即还未到达发送方)的确认分组可能有哪些?说明这些确认分组是用来确认哪些序号的分组。
【单选题】在音频数字化的过程中,对模拟语音信号处理的步骤依次为( )
【单选题】在音频数字化的过程中,对模拟语音信号处理的步骤依次为()
【单选题】在音频数字化的过程中,对模拟的语音信号处理的步骤依次为()。
【简答题】supply /sə ˈ plaɪ/ n./v.