误码率
参考答案：
指衡量数据通信系统在正常工作的情况下的传输可靠性的指标，它定义为二进制数据位传输时出错的概率。
--With the _____________ of science and technology, people can talk with each other much more conveniently than before.
--But China is still a __________ country, people have to work hard to live a better life.
A．developed; developing;
B．development; developed
C．development; developing
D．developing; developed
病案管理人员收回所有出院病案的时间应限定在病人出院后（）。
A.4小时内
B.6小时内
C.24小时内
D.48小时内
E.72小时内
