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【简答题】
古代医生又称“坐堂医生”,据信源于()
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题目标签:
信源
医生
参考答案:
参考解析:
刷刷题刷刷变学霸
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【简答题】Y ears ago, doctors often said that pain was a normal part of life. I n particular, when older patients __1_ of pain, they were told it was a natural part of aging and they would have to learn to live...
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【单选题】假设信源是由q个离散符号S1,S2,…,Si,…,Sq所组成的符号集合,集合中的每个符号是独立的,其中任一个符号Si出现的概率为P(Si),并满足∑P(Si)=1。那么符号Si含有的信息量I(Si)等于 (36) ,单位是 (37) 。
A.
比特
B.
信息熵
C.
dB
D.
无单位
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【单选题】数字电视广播业务平台一般划分为信源接收、业务插入、信号解密、传输分发、安全播出五个部分。()
A.
正确
B.
错误
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【单选题】信源A={0,1,2,3}为四进制信源,当P(0)=3/8,P(1)=1/4,P(2)=1/8时,信源A的平均信息量为:
A.
1.906bit/symbol
B.
2bit/symbol
C.
1bit/symbol
D.
1.608bit/symbol
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【判断题】国内提出的被动式监控方法,是对信源安全性方面的研究(信源安全性属于量子密钥分配安全性),采用真随机数技术和信源监控技术,已经使用初步原理实验进行了实现。
A.
正确
B.
错误
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【简答题】England still has a system which it’s had since the Second World War. (26) every patient in England is registered with one family doctor, almost always near where they live. If they’re ever sick, or...
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【单选题】In department stores and closets all over the world, they are waiting. Their outward appearance seems rather appealing because they come in a variety of styles, textures, and colors. But they are ulti...
A.
The multi-functional use of high heels.
B.
Their attempt to show off their status.
C.
The rich variety of high heel styles.
D.
Their wish to improve their appearance.
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【单选题】无线引入分布系统信源时,下列叙述正确的是().
A.
室外施主天线挂得越高越好
B.
室外施主天线瓣宽越大越好
C.
室外施主天线离基站越远越好
D.
室外施主天线接收信号越纯越好
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【多选题】以下属于信源熵的性质的是
A.
对称性
B.
极值性
C.
非负性
D.
确定性
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【单选题】刘女士,65岁,退休干部,平日缺乏体育锻炼,口味偏咸,身高155cm, 体重70kg,确诊高血压,肾功能不良。医生建议其増加运动,下列不适合刘女士身体活动 的是:()。
A.
举重
B.
太极拳
C.
步行
D.
'游泳
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