狼人大伊在人51线香

Why should I practice public speaking? The scene switched to Lujiazui Financial House at the end of 2014.其二便是他才被小葱给救治过，自然要阐明己见，赞颂小葱，顺便撇清自身。Technical Requirements三米，一米，五十厘米，三十厘米，二十七厘米。Looking for customers is definitely not a aimless search. What we are looking for should be the target customers. Of course, we also need to make preparations in advance and carefully locate the target customers. What kind of people are our products suitable for, what kind of enterprises are useful to, and who are interested in our products now. Combined with these thoughts, the scope of customers is roughly delineated. Then, through the Internet and Yellow Pages, the information of the target customers is preliminarily mastered, and then the next marketing plan is prepared.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.