问题 单项选择题

某用户在域名为wuyouschool.com.cn的邮件服务器上申请了—个账号,账号名为huang,则该用户的电子邮件地址是______。

A.wuyouschoococn@huang

B.huang@vuyottschoococn

C.huang%wuyouschoococn

D.wuyouschoococn%huang

答案

参考答案:B

解析:[知识点] 浏览器、电子邮件及Web服务器的安全特性[评析] 在因特网中每个用户的邮箱都有一个全球惟一的邮箱地址,即用户的电子邮件地址。用户的电子邮件地址由两部分组成,后一部分为邮件服务器的主机名或邮件服务器所在的域的域名,前—部分为用户在该邮件服务器中的账号,中间用“@”分隔。

单项选择题 案例分析题
问答题

You probably won’t be shocked to find out that the inventor of tire rubber is Charles Goodyear, as he’s the only guy on the list to actually get his name attached to the end product. (46) It wasn’t easy coming up with a form of rubber tough enough to withstand the drag racing and car chases everyone envisioned the day the automobile was invented. In fact, if there was one man who should have given up his life dream, it was Goodyear. (47)The man spent time in and out of prison, lost every friend he had and starved his children in his tireless pursuit of a per form of rubber.

(48) After his first two years of tinkering and failing with primitive rubber in the 1830s, Goodyear and his family were camping out in an abandoned factory and fishing for sustenance. This is when he made a huge breakthrough: He’d use acid to smooth out and toughen rubber! The government bought 150 mailbags made of the stuff and the rest is...

Oh, wait. They were all defective. The process didn’t work and Goodyear was ruined. Again.

Finally in 1839, Goodyear wandered into a general store with another failure of a formula. The crowd watched and laughed at him. (49)In a rage, he began to shake his fist, flinging a piece of his rubber onto the hot stove top.

After inspecting the charred remains, he realized that he had just found a way to make durable, weatherproof rubber. (50) Despite what we’re sure were numerous failed "now let’s try setting this on fire to see if it improves it!" experiments, an empire was born.

(50) Despite what we’re sure were numerous failed "now let’s try setting this on fire to see if it improves it!" experiments, an empire was born.