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【单选题】
TCP/IP参考模型中，应用层协议常用的有______。A.
TELNET、FTP、SMTP和HTTP
B.
TELNET、FTP、SMTP和TCP
C.
IP、FTP、SMTP和HTTP
D.
IP、FTP、DNS和HTTP
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】阅读理解。 My friend Larry has a big dog. Its name is Johnny. Johnny is very smart. Every Sunday afternoon Larry takes Johnny for a long walk in the park. (A) The dog likes walking very much . One Sunday a...
【简答题】阅读理解。 My friend Larry has a big dog. Its name is Johnny. Johnny is very smart. Every Sunday afternoon Larry takes Johnny for a long walk in the park. (3) The dog likes walking very much . One Sunday a...
【单选题】House-sharing can bring problems of ______ with others’ living habits.
A.
putting off
B.
putting forward
C.
putting aside
D.
putting up
【简答题】题 3 : 设置一个窗体,在窗体中设置 2 个水平滚动条和 1 个标签。将 2 个水平滚动条的取值范围设为 100-300 之间。拖动水平滚动条时,将 2 个水平滚动条的数值的和显示在标签里。
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