[多选题] 数据通信系统的主要技术指标包括（）。 A.比特率和波特率 B.误码率和吞吐量 - 查题网

>> 河南成教 / 数字通信技术

河南成教 / 数字通信技术

正确率：100%

[多选题] 数据通信系统的主要技术指标包括（）。

A.比特率和波特率

B.误码率和吞吐量

C.信道的传播延迟

D.传输介质

积分

数字通信技术

参考答案：

点击查看答案

佳题速递：

由于媒体的（）特性，一些专家提出了“地球村”的概念 A. 扩散性 B. 能动性 C. 重复性 D. 固定性计算机统考

传染病的预防主要有三个环节，其中像幼儿园的消毒工作属于（）。学前儿童卫生保健

II. Fill in the blanks with words from the box below. (3points each) ask for coming-of-age corporation guidance negotiations previous proposal regain rite of passage vision Dear Julio, It’s been five years since we graduated, but I still miss my old friends from college. That’s why the reunion of the Class of 2003 this summer is going to be great! The years at Central State University were the best years of our lives. It was a coming-of-age period in which we were growing from adolescence to adulthood. We were leaving behind ourpreviousfriends from high school and finding new ones in college. We were trying to decide whowe were and what we wanted to do, to develop avisionfor the future. We took courses and looked forguidance from our professors, hoping they would help us decide on a profession. I remember a proposalfrom one of my professors; she said that how much money you made wasn’t as important as how much better you made the world. At first, I was just concerned about paying back my student loans to the bank. I wanted toregaina sense of independence, of not owing money to anyone. When I paid them back, I remembered my professor’s advice about contributing to society. I decided to work for a nonprofit corporation. I got a job with Fair Trade, an organization that buys food products, like coffee, from small farmers. These farmers can’t ask for high prices because they produce small crops. So Fair Trade holds negotiationswith food companies so that they pay fair prices to the farmers. I even went to Central America to visit these farms, which was like a rite of passagefor me. I realized how much I really have and how much I must give back to society. Your friend, Shawn高级英语阅读（2）

客户关系生命周期管理的目的主要是根据不同的客户不同的生命阶段合理配置企业资源。客户关系管理

下列关于m阶B-树的说法错误的是（）。 A.根结点至多有m棵子树 B.所有叶子都在同一层次上 C.非叶结点至少有m/2 (m为偶数)或m/2+1（m为奇数）棵子树 D.根结点中的数据是有序的 E.数据结构

【单选】国家外汇管理局2022年6月24日发布的2022年一季度国际收支平衡表显示，2022年一季度，我国经常账户（）889亿美元，为历史同期最高值。 A、赤字 B、逆差 C、盈利 D、顺差形势与政策2