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【单选题】
加密和解密过程都是在( )控制下进行的
A.
明文
B.
密文
C.
密钥
D.
信息
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【单选题】发送电子邮件时需要建立连接,发送完后将连接断开,这种发送方式是由()决定的。
A.
应用层
B.
表示层
C.
会话层
D.
传输层
查看完整题目与答案
【单选题】--_____ did you ________the summer vacation? -- It was terrible . I have too much homework to do .
A.
What; like
B.
How , like
C.
How; think of
D.
What ; think
查看完整题目与答案
【简答题】发送电子邮件时需要建立连接,发送完后将连接断开,这种发送方式是由哪一层决定的
查看完整题目与答案
【单选题】听力原文：W: You didn't have too much trouble fixing your car engine, did you? M: It only took me most of the day. Q: What does the man mean? (15)
A.
He had no time fixing his car engine.
B.
Fixing his car engine took him a lot of time.
C.
He only fixed part of his car engine.
D.
His car engine turned out well.
查看完整题目与答案
【单选题】You must have been there, ____________?
A.
have you
B.
did you
C.
haven’t you
D.
didn’t you
查看完整题目与答案
【单选题】发送电子邮件时需要建立连接,发送完后将连接断开,这种发送方式是基于传输层的
A.
TCP
B.
UDP
C.
APP
D.
TFTP
查看完整题目与答案
【简答题】C Isn't it astonishing how much time we spend talking about food? “Have you ever eaten …?” “What did you have for lunch?” and so on. And yet when you travel from one country to another, you will find ...
查看完整题目与答案
【多选题】亚健康状态的主要表现“一多三退”，其中三退包括(    )。
A.
睡眠减退    
B.
活力减退
C.
反应能力减退    
D.
适应能力减退
查看完整题目与答案
【单选题】发送电子邮件时需要建立连接，发送完后将连接断开，这种发送方式是由哪一层决定的
A.
应用层；
B.
表示层；
C.
会话层；
D.
传输层
查看完整题目与答案
【单选题】Woman: Did you have much trouble with the exam? Man: Not really. Question: How was the man doing with the exam?
A.
He didn't have much trouble.
B.
He is sure that he did perfectly in the exam.
C.
He did very badly in the exam.
D.
He didn't take the exam.
查看完整题目与答案
相关题目：
【单选题】发送电子邮件时需要建立连接,发送完后将连接断开,这种发送方式是由()决定的。
A.
应用层
B.
表示层
C.
会话层
D.
传输层
查看完整题目与答案
【单选题】--_____ did you ________the summer vacation? -- It was terrible . I have too much homework to do .
A.
What; like
B.
How , like
C.
How; think of
D.
What ; think
查看完整题目与答案
【简答题】发送电子邮件时需要建立连接,发送完后将连接断开,这种发送方式是由哪一层决定的
查看完整题目与答案
【单选题】听力原文：W: You didn't have too much trouble fixing your car engine, did you? M: It only took me most of the day. Q: What does the man mean? (15)
A.
He had no time fixing his car engine.
B.
Fixing his car engine took him a lot of time.
C.
He only fixed part of his car engine.
D.
His car engine turned out well.
查看完整题目与答案
【单选题】You must have been there, ____________?
A.
have you
B.
did you
C.
haven’t you
D.
didn’t you
查看完整题目与答案
【单选题】发送电子邮件时需要建立连接,发送完后将连接断开,这种发送方式是基于传输层的
A.
TCP
B.
UDP
C.
APP
D.
TFTP
查看完整题目与答案
【简答题】C Isn't it astonishing how much time we spend talking about food? “Have you ever eaten …?” “What did you have for lunch?” and so on. And yet when you travel from one country to another, you will find ...
查看完整题目与答案
【多选题】亚健康状态的主要表现“一多三退”，其中三退包括(    )。
A.
睡眠减退    
B.
活力减退
C.
反应能力减退    
D.
适应能力减退
查看完整题目与答案
【单选题】发送电子邮件时需要建立连接，发送完后将连接断开，这种发送方式是由哪一层决定的
A.
应用层；
B.
表示层；
C.
会话层；
D.
传输层
查看完整题目与答案
【单选题】Woman: Did you have much trouble with the exam? Man: Not really. Question: How was the man doing with the exam?
A.
He didn't have much trouble.
B.
He is sure that he did perfectly in the exam.
C.
He did very badly in the exam.
D.
He didn't take the exam.
查看完整题目与答案