Ant digital currency

1. digital currency is a kind of legal tender, which must be issued by the central bank. Both digital gold coin and cryptocurrency belong to digital currency, which is not a network virtual currency, because it is not limited to virtual space, but is often used for real goods and services transactions, such as bitcoin, Wright coin, bitstock, etc. at present, there are thousands of digital currencies issued around the world

the digital currency launched by the central bank is a national sovereign currency, which is based on the digitalization of RMB. This is a piece of data generated by a complex algorithm, which contains blockchain and encryption technology, making it unique. The payment of Alipay and WeChat is not digital money, but only based on the payment realized by electronic accounts. Compared with the current pattern of "payment transfer collection" with the help of third-party payment, what digital currency needs to achieve is "decentralization", that is, to cancel the transfer link and directly hand over the money from the payer's account to the payee, so as to rece the payment cost in currency circulation

types of digital currency

according to different issuing or consensus mechanisms, it can be divided into four categories:

1, proof of work (POW)

proof of work. The system rewards are obtained through the mining of computing power to complete the issuance and distribution of currency. More work, more gain. Such as bitcoin, lightcoin (LTC)
the advantage is that the mining cost can form a monetary price support to a certain extent, and the disadvantage is that energy consumption and environmental protection are criticized< 2. Proof of stake (POS). Allocate the newly generated currency or interest according to the amount and time of cryptocurrency you hold. Such as dash and Neo
compared with pow, POS is more energy-saving, but it increases the security risk

3. The evolution scheme of delegated proof of stake (dpos)
POS. Similar to the voting mechanism of the board of directors, through the election of representatives to vote and make decisions, n accounting nodes are elected to create, verify, sign and supervise each other. Such as the grapefruit coin (EOS)
the advantage is high efficiency, but the problem is that it presents a semi centralized state

4. POW + POS hybrid mechanism
POW is mainly used to issue currency, and POS is used to maintain the system. For example, PPC

according to the project type, it can also be divided into four categories:

1. Currency category
digital currency issued for the purpose of transfer, payment and value storage. For example, bitcoin, bitcoin cash (BCH), Monroe (XmR), and grin

2. Public chain currency, that is, the digital currency issued by public chain projects, is generally the "fuel" for the application projects to run on the public chain. Such as eth, grapefruit coin, TRX and ont

3. Application token, that is, digital currency issued by decentralized application projects, is equivalent to equity or points. For example, OMG (payment application), GXC (data application), 1st (game application)

4. Platform currency, that is, the digital currency issued by the digital currency exchange, is equivalent to equity, points or fuel. For example, BNB, HT and okb.

2.

This is a Linux system IP address configuration command. The specific meaning is:

set the IP address of the system to 192.168.0.2; The subnet mask is 24, that is 255.255.255.0; The broadcast address is 192.168.0.255; The name of NIC device is eth0

all computers in the network must set a unique IP address to communicate normally. Because of this unique address, users can select the objects they need from thousands of computers efficiently and conveniently when they operate on networked computers

The IP address is just like our home address. If you want to write to a person, you need to know his or her address so that the postman can deliver the letter. A computer sending information is like a postman. It must know the only "home address" to avoid sending the letter to the wrong person. But our address is expressed in words, the address of the computer is expressed in binary numbers

eth0 is the name set by the system for the network card. If there are al network cards or multiple network cards, there will be names like eth1 and eth2. The name can be set artificially. It is the unique name of the network card in the current computer system

< H2 > after modification, you can use ifconfig command to check whether the modification is successful

3.

1. The national translation qualification examination (CATI)

CATI is the most valuable translation certificate at present, and the evaluation of professional title can play a role. Sponsored by the Ministry of human resources and social security of the people's Republic of China (hereinafter referred to as the Ministry of personnel), it is the determination of the bilingual translation ability and level of the test participants in interpretation or translation

CET-3, graated from non foreign language major, passed CET-6 or college level, and has some practical experience in translation and interpretation

Level 2, graate of non foreign language major or undergraate of foreign language major, with 3-5 years of practical translation experience

With 8-10 years of practical translation experience, he is an expert in bilingual translation of a certain language

There are seven languages in the test, including English, Japanese, French, Arabic, Russian, German and Spanish

There are four levels, namely: senior translator; First level interpretation and translation; Second level interpretation and translation; Three levels of interpretation, translation. Among them, senior translators are obtained through evaluation, first level interpreters and translators are obtained through the combination of examination and evaluation, and second and third level interpreters and translators are obtained through examination

There are two major categories: translation and interpretation, and interpretation is divided into consecutive interpretation and simultaneous interpretation

2. Shanghai Certificate in foreign language interpretation (SIA)

jointly organized by the Organization Department, the personnel department and the Ministry of ecation of Shanghai municipal Party committee, the test center is Shanghai, and the corresponding level is divided into English high, English Chinese and Japanese interpretation. Advanced English, CET-6 or equivalent; Intermediate English, CET-4 or equivalent; Japanese interpretation, equivalent to the Japanese Proficiency Test Level II

Assessment Language: English, Japanese

cost: 210 yuan each for written and oral test of advanced English interpretation; The written test and oral test are 180 yuan each

among the translation certificates, CATI (translation professional qualification test) of the Personnel Bureau has the highest gold content, followed by Shanghai's oral and written translation qualification test, which is suitable for white-collar workers

3. National Business English translation qualification certificate (ettbl)

sponsored by China Federation of Commerce, college students and undergraates majoring in Business English (including international economy and trade, foreign trade, finance, international finance, marketing, international marketing, international business, tourism management, e-commerce, business administration, etc.)

The level of Mastering Business English can be divided into five levels: junior, intermediate, senior, translator and senior translator

Junior: be able to have general business English conversation in business communication. Be competent for the employees of foreign-related enterprises and the same level of enterprise export personnel, hotel receptionists, store cashiers, etc

intermediate: be able to interpret and translate in general business talks and business activities. Be competent for the staff of foreign enterprises, secretaries and office supervisors of the same level

Advanced: be able to interpret and translate in general business meetings and foreign affairs business activities. Able to be competent for the director of foreign-related enterprises and the same level of enterprise manager assistant, enterprise manager, etc

translator: be able to perform complex interpretation and translation in large-scale business meetings, and be competent for full-time business English translation

Senior translator: able to interpret and translate in various international conferences. In the process of interpreting, they can do consecutive interpretation and simultaneous interpretation; In the process of translation, we should translate the documents and professional materials of various foreign affairs and business activities. Be able to do all kinds of complicated translation and interpretation work in international business conference, and solve all difficult problems in Business English

National Business English test (cnbect)

the national international business English proficiency certification examination, organized by China Society for international trade, Ministry of Commerce of the people's Republic of China, was officially launched in 2006. The first examination was held in April 2007 and was certified by the Ministry of Commerce of the people's Republic of China

this test covers both language and business. In terms of language, test the ability of listening, speaking, reading, writing and translating in international business environment; Business involves common business in international business, highlighting international trade

The examination is divided into three levels. Every year on the second Saturday and Sunday of May, the national examination of International Business English (Level 1) is held. There are five items in the written test (listening, reading, translation and writing) and oral test

The United Nations Institute for training and Research (UNITAR) was established in 1965 in accordance with the resolution of the general assembly of the United Nations on December 11, 1963 (XVIII)

is the only international language professional training and certification system in the Asia Pacific region certified by the CIFAL center of the United Nations Institute for training and research. Unlpp training and certification examination will be graally implemented in China and abroad according to the major, language and level, which is composed of two parts: training and certification

4. What game and what company is not a global game department management, if Tencent and Xunlei are divided into two companies, currency is divided into two

5. Copper ore is the lowest, but also the most popular, because to make bronze keys, there are many novice villages in every city. You can go to novice villages everywhere

6. Neo, formerly known as Xiaoyi, was officially approved in 2014, and started real-time open source at GitHub in June 2015
Neo blockchain combines peer-to-peer network, Byzantine fault tolerance, digital certificate, smart contract, superconcting transaction, cross chain interoperability protocol and other technologies. Contributor: bitewang