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【单选题】
下列对常见网络服务对应端口描述正确的是 ( )A.
.HTTP:80
B.
Tehet:20
C.
. FTP:21
D.
.SMTP:llO
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【简答题】【原句】No one knows how much time we have. That's why we must live in the moment. We must enjoy the moment. We must reach and see and spend as much time as we can with our families and friends and the pe...
【判断题】Since the PE ratio measures how much investors are willing to pay per dollar of current earnings, lower PEs are often taken to mean that the firm has significant prospects for future growth.
A.
正确
B.
错误
【简答题】Although there are many ways to do market research,most businesses use one or more of five basic methods: surveys, focus groups,personal interviews and observation. The type of data you need and how m...
【简答题】联合国是在反战争取得胜利后开始创建的。()
【简答题】网络安全的目标及设计原则是什么?
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