单选题
●常见的内存由(9)构成,它用电容存储信息且需要周期性地进行刷新。
题目答案
A
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答案解析
暂无解析
●常见的内存由(9)构成,它用电容存储信息且需要周期性地进行刷新。
●下面关于光纤的论述中,错误的是(21)。
(46)
●In computer science ,a data (72) is a way of storing data in acomputer so that it can be used efficiently.
●设信道的码元速率为600波特,采用4相DPSK调制,则其数据速率为 (22) b/s。
●A (73) is a named memory block. By using its name, we can refer to the data stored in the memory block.