日产一区区三区四区在线

The equipment of China's weightlifting national team is Dowell, but there are also many athletes who buy NIKE weightlifting shoes worth several thousand yuan at their own expense. Only the top athletes can realize the difference.Columnist Li Gang once told an interesting story: A few years ago, his wife wanted to buy a school district house. As soon as he counted his savings, he did not even have enough down payment. Therefore, it is suggested that we should save some money. Of course, in the end, the arm failed to twist the thigh, and the wife borrowed it from east to west, forcing the down payment to be paid.张良有理由相信，将来的某一天蒲俊会成为不输于其他人的，天下数一数二的名将。Now, let's imagine why these "checkpoints" are called "chains" in iptables. As we know, The purpose of a firewall is to match "rules" for passing messages, Then execute the corresponding Action, So, when the message passes through these checkpoints, You must match the rules on this level, However, there may be more than one rule on this level, But there are many rules, When we put these rules in a chain, A "chain" has been formed. Therefore, we imagine each "checkpoint" as shown in the following figure. In this way, it is more appropriate to call them "chain". Each message passing through this "checkpoint" must match all the rules on this "chain". If there are qualified rules, the corresponding actions of the rules will be executed.Hold down the mouse wheel仔细观察，河水似乎确实比往日小了几分，却也不是很明显。PS: I tried Chrome, IE11, Firefox, and it was all the same.