Ctn.org.br

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Host name 104.21.51.251, IP address: 104.21.51.251, location: United States

System updated on 2026/01/19

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知乎 - 知乎
https://www.bing.com/ck/a?!&&p=b691303971fb7d366fff57b100600866d92d2a7ce01cdf08a743bd4253c8c9bfJmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly93d3cuemhpaHUuY29tL3NlbGVjdGlvbi8&ntb=1
知乎 - 有问题，就会有答案
https://www.bing.com/ck/a?!&&p=f172fe0f556384624cf1a31381e6fefbfcc50a6ca14213363ade0b90da7205d1JmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly93d3cuemhpaHUuY29tLw&ntb=1
1/1+1/2+1/3+1/4+……+1/n=？怎么个解法？ - 知乎
https://www.bing.com/ck/a?!&&p=d129dceda77339edc5b8d19fa92b8a583f503ba43b736f6cb85b2fe534792760JmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly93d3cuemhpaHUuY29tL3F1ZXN0aW9uLzQ2MjYzOTk4&ntb=1
如何定义什么是 1？ - 知乎
https://www.bing.com/ck/a?!&&p=82efb5c8bc1c952f98b76174a4d006de93e8e931a5b6983922dd4848168097a5JmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly93d3cuemhpaHUuY29tL3F1ZXN0aW9uLzI3NjMwMzMyNw&ntb=1
为什么 1 不能被认为是质数？ - 知乎
https://www.bing.com/ck/a?!&&p=18e2ddbca00b26d9348c488ddef8768b78f22daa069e9d13fe62f171e41e08f9JmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly93d3cuemhpaHUuY29tL3F1ZXN0aW9uLzMxMDk5ODU3NA&ntb=1
1-1+1-1+1-1+1... 这个无穷数列的值是什么？如何证明？ - 知乎
https://www.bing.com/ck/a?!&&p=be3911aad3a45e50dc10ef755de33a79c4f11c4532d04cb544ae5290d3514e07JmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly93d3cuemhpaHUuY29tL3F1ZXN0aW9uLzE5OTUyODg5&ntb=1
Formal proof for $(-1) \\times (-1) = 1$ - Mathematics Stack Exchange
https://www.bing.com/ck/a?!&&p=29b03ae5dc6ef389eaa0e76f622a2ddd00527d45160ac550a41a49353173c257JmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly9tYXRoLnN0YWNrZXhjaGFuZ2UuY29tL3F1ZXN0aW9ucy8zMDQ0MjIvZm9ybWFsLXByb29mLWZvci0xLXRpbWVzLTEtMQ&ntb=1
False Proof of 1=-1 - Mathematics Stack Exchange
https://www.bing.com/ck/a?!&&p=9f0e8304481ec74a91dd6dca0904f04847ecf7c7be828f68357931844e77ca20JmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly9tYXRoLnN0YWNrZXhjaGFuZ2UuY29tL3F1ZXN0aW9ucy8xOTAxNzE2L2ZhbHNlLXByb29mLW9mLTEtMQ&ntb=1
Word，插入多级列表，但是改了1.1，第二章的2.1也变成1.1，随着改变 …
https://www.bing.com/ck/a?!&&p=d7a2ef0a950483bcaf35e0e94c662bfc307e634f2aecc8d188f853ee45cd6e53JmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly93d3cuemhpaHUuY29tL3F1ZXN0aW9uLzM5MzMzMTg4NA&ntb=1
What is the value of $1^i$? - Mathematics Stack Exchange
https://www.bing.com/ck/a?!&&p=aee7cd56ff02edefcce7288ee992cb8a25f7a073e90916525cd6b7888e6509b3JmltdHM9MTc2ODY5NDQwMA&ptn=3&ver=2&hsh=4&fclid=03dc59a5-b8a7-630f-3b5b-4f43b9db62e8&u=a1aHR0cHM6Ly9tYXRoLnN0YWNrZXhjaGFuZ2UuY29tL3F1ZXN0aW9ucy8zNjY4L3doYXQtaXMtdGhlLXZhbHVlLW9mLTFp&ntb=1

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› Ftp: 21

› Ssh: 22

› Telnet: 23

› Smtp: 25

› Dns: 53

› Http: 80

› Pop3: 110

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› My sql: 3306

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› Session Initiation Protocol (SIP): 5060

› Virtual Network Computer display: 5900

› X Window server: 6001

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