So let's explain the rules of iptables in a common way. There was an analogy before, Each "chain" is a "checkpoint", Every message passing through this "level" must match the rules on this level. If there is a match, The message is processed correspondingly, For example, you and I are like two "messages" at the moment. Both of you and I are going to enter the customs at this moment. But the duke has a life, Only the imposing person can enter the customs, Those who do not meet this requirement are not allowed to enter the customs. So the soldiers guarding the customs followed the "rules" formulated by the duke. I began to look at you and me. In the end, you entered the customs smoothly, and I was rejected. Because you met the standard of "dignity", you were "released", while I did not meet the standard, so I was not released. In fact, "dignity" is a kind of "matching condition", "release" is a kind of "action", and "matching condition" and "action" form the rules.It is convenient for fighting and evacuation, and a circular fire lane should be set up. With the accelerating pace of urbanization, urban land is increasingly tight, which promotes the construction of high-rise buildings. Many high-rise buildings, due to poor consideration of fire prevention design and other reasons, have many congenital hidden dangers, and fires occur from time to time, causing heavy losses. In order to create convenient conditions for fire fighting and rescue work and ensure the safety of buildings, circular fire lanes should be set up around high-rise buildings. However, regardless of the size of the building, it is indeed difficult to require the circular fire lanes. Lanes can be set up along the two long sides of the building. In order to prevent the collapse of building components in case of fire from affecting the normal operation of the fire lane, the distance between the fire lane and the outer wall should be 5m. There should be no trees, overhead pipelines, etc. that hinder the operation of climbing fire engines between fire lanes and high-rise buildings. If the total length of the building exceeds 220m, a fire lane shall be set up to pass through the building. There is no inner courtyard in the building, there are ring fire lanes around it, and fire engines crossing the building need to be set up. Q: An L-shaped high-rise building has a total length of about 170m, a length of 120m along the street, and a length of 50m along the inner street (residential road). Do you want to set up fire lanes crossing the building? A: The relevant provisions of the "Construction Regulations" and "High Regulations" consider that there is no restriction on the length of the two wings on the premise of meeting the requirements of fire fighting and evacuation. The building only needs to set up a pedestrian passageway connecting the street and the inner courtyard at the part over 80m along the street, and there is no need to set up a fire lane. In the planning of fire lanes, in addition to the relevant provisions of the "Construction Regulations" and "High Regulations", attention should also be paid toThe adapter mode focuses on adapting interfaces and adapting interfaces that do not match to each other.民国年间，绸布庄少东家黄绍宁娶刘婉云为妻，不料新娘无故失踪。黄老夫人为传宗接代逼绍宁再娶，贫苦女秋荷为报恩嫁给绍宁，住进了被诅咒且灵异传奇不断的黄家大院，饱受惊悚及悲惨凄苦的折磨。陈父与黄家生意竞争失败含恨而死，陈文海立誓报仇！他凭借超人女性的胆识潜入瑞盛祥卧底，与黄家管家吴妈及黄家养女雁儿串通把黄家大院搅得天翻地覆。绍宁同父异母的弟弟绍华回乡认祖归宗，遭陈文海算计爱上嫂子秋荷。绍宁妻离子散，黄家被逼到断子绝孙的境地。陈文海利用绍宁的信任抢得黄家产业，并陷害绍宁，使其被投入死牢待斩。已被富家收养的秋荷倾囊而出帮绍宁脱罪。绍宁欲接秋荷回家却遭到雁儿百般阻挠，雁儿如愿嫁给绍宁成为黄家第三任新娘，终因难产而死，留下一个女婴。陈文海深爱火影忍者雁儿，雁儿之死使他在世上再没一个亲人，他失去人性杀婴儿解恨，却不知这是他和雁儿的女儿。最后凭秋荷的大义和坚忍挽救了黄家，改变了陈文海的命运！张大胆以为那东西被自己吓跑了，便回头继续走。Windows10
