题目内容

域名系统是因特网的命名方案,下列4项中表示域名的是( )。

A. zjwww@china.com
B. hk@zj.school.com
C. www.cctv.com
D. 202.96.68.123

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下面关于域名的说法正确的是( )。

A. 域名专指一个服务器的名字
B. 每个域名必须至少有一个DNS服务器来管理属于该域名的主机信息
C. 域名可以自己任意取,无须注册
D. 域名就是统一资源定位器

POP3用于( )电子邮件。

A. 接收
B. 发送
C. 丢弃
D. 阻挡

_________1. When the father is reluctant to walk and complains about the chilly weather, the daughter's memory flashes far back into a similar situation, when she was a small child, tired and cold, in a harbor where she has never been before. Here the daughter starts to recall the past._________2. The daughter thinks her father does not blame her probably because it is Sunday or probably because she is small. But for whatever reasons, no words of complaint come from her father. Time slows down when affectionate love flows between the father and the daughter._________3. On the way back, my father tells me how eels travel regularly to the Sargasso Sea._________4. There are good old days when time flies fast and days when they are not so happy._________5. She tries hard to get the smoked eel even though it has been out of supply for months._________6. The daughter is encouraging the weak father to walk and to march._________7. While he hangs up our coats, I try a small amount of eel out of curiosity. It has a strong unpleasant smell with a taste of smoke, and it contains too much salt._________8. The eel is smoked. And we will take a part of it back home for supper._________9. I try to help him get up from the wheelchair, but he is too heavy and too weak to get up._________10. Slightly shaking, he says in an unhappy tone of voice that it is cold.

算法中每一条指令只要是确切、可实现的,执行次数或执行时间是无限的也行。

A. 对
B. 错

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