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Ethernet also has preamble and inter-frame gap when transmitting. The preamble takes up 8 bytes (byte), or 64 bits. The first 7 bytes of the preamble are separated by 10101010, 1 and 0. However, the eighth byte becomes 10101011. When the host detects two consecutive 1s, it will know that there is data at the beginning. During network transmission, the data structure is as follows:Know the principle man: Very good, your experience value has improved a lot. However, we can't start fighting monsters yet. After all, no monster can be directly sprayed to death. You lack tools. Then at this stage, we need to strengthen our programming ability. First find a framework to come down, read the source code, what? You said you can't read the source code, it doesn't matter, there are a lot of experience reading the source code online. Of course, the basis of these experiences is without exception: read more and write more. On this basis, find trick again. After the source code of the framework is set down, change some codes to run, debug them, and then constantly find out the reason to see how each API is written, and try to write it yourself. Write more and practice more. After 30 years of hard coding, you will definitely get something.(3) If a signal lamp is provided for this signal, it shall be a ring-illuminated white lamp with a visible distance of at least 5 nautical miles and shall comply with the requirements contained in Appendix I to these Rules.黄豆不满地说道：杨子叔叔，哪有你这样说人的。Gu Xiqian knew the value of sweet potatoes, but this period …为了对传说中的撒旦博士进行调查，杰瑞（Chris Hardwick 饰）和玛丽（Jennifer Jostyn 饰）、比尔（Rainn Wilson 饰）和丹尼丝（Erin Daniels 饰）这两对情侣驾车行驶在某乡村小路上。他们来到一个荒无人烟的地方，且遭遇狂风暴雨，万般无奈之下，他们躲进了一幢破旧的房子内。