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【简答题】
Passage B Charles and I used to hang out all the time, together with a few other guys. but he seemed too 1 for us lately. We didn't ask him for an 2 . Instead, we decided to teach him a lesson in the way he treated us We started giving Charles the cold 3 , and almost everybody was taking no notice of him. He looked so sad, 4 at lunchtime when he sat alone in the cafeteria At first I was 5 my plan had worked, but Charles' unhappiness made me upset. I hadn' t thought about how badly my " 6 " would hurt him. During one lunch period, I watched as Charles 7 glanced at his watch, obviously counting the 8 until he could leave the cafeteria. I suddenly realized I had done wrong. "Hey! Man. I'm terribly sorry. " I called out. Charles turned around slowly, clearly wanting to 9 eye contact. "Oh, so you are talking to me now? he asked. "I'm so sorry, 10 I had thought that you wanted to end our friendship." I said. "What?" he nearly shouted, looking much surprised. "I”ve left you alone because I thought that was 11 you wanted," "Oh, my God! 12 would I want that?" I shouted, completely puzzled. Clearly, we both had been understanding each other 13 At first Charles couldn't accept my apology, but eventually, he did 14 me. We 15 started hanging out together again. And our friendship wasn't destroyed at all.
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【简答题】什么是全双工系统?
【单选题】In a circular linked list
A.
Components are all linked together in some sequential manner.
B.
There is no beginning and no end.
C.
Components are arranged hierarchically.
D.
Forward and backward traversal within the list is permitted.
【单选题】以下不属于通信系统工作方式的是:
A.
全双工
B.
移动通信
C.
单工
D.
半双工
【判断题】广播系统是单工通信,对讲机系统是半双工通信,计算机之间是全双工通信。
A.
正确
B.
错误
【简答题】全双工以太网应用的特点是什么?为什么在100BASEFX系统中使用全双工以太网技术尤为重要?
【单选题】数字通信系统中,半双工和全双工的区别在于是来往信息交互的实现方式,其中,( )。
A.
半双工和全双工的信息交互均使用一条线路完成
B.
半双工和全双工的信息交互均使用两条线路完成
C.
半双工的信息交互使用一条线路完成、全双工使用两条线路完成
D.
全双工的信息交互使用一条线路完成、半双工使用两条线路完成
【简答题】What is visible culture and invisible culture? Give some examples. What are major components of communication? List them.
【单选题】关于物证的双联性表述,错误的是( )
A.
物证双联 性 是客观存在的事实。
B.
首先物证 必须与案件现场有关联,
C.
若物证与案件事实仅有一方面的关联,也可以用来证明案件事实。
D.
其次物证必须与特定的人或物品有关联。
【单选题】半双工,全双工,时序RFID系统是依据( )分类的
A.
标签供电形式
B.
耦合原理
C.
工作频率
D.
通信原理
【单选题】5G系统全双工是指 ()
A.
A上下行链路同频,同时
B.
上下行链路同频,不同时
C.
上下行链路不同频,同时
D.
上下行链路不同频,不同时
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