What is BTC certified

2.

BTC (business to customer)

also known as B2C, e-commerce according to a classification of trading partners, that is, commercial institutions to consumers of e-commerce. This form of e-commerce is generally based on the network retail instry, mainly with the help of the Internet to carry out online sales activities

B2C mode is the earliest e-commerce mode in China, marked by the formal operation of 8848 online mall. B2C means that enterprises provide consumers with a new shopping environment through the Internet - online store, where consumers shop online and pay online

because this mode saves the time and space of customers and enterprises, and greatly improves the transaction efficiency, especially for busy office workers, this mode can save valuable time

two BTB (business to business)

also known as B2B, refers to a kind of Internet market, which is the marketing relationship between enterprises. It combines the intranet with customers through B2B website, and provides better service for customers through the rapid response of the network, so as to promote the business development of enterprises. In recent years, B2B develops rapidly and tends to be mature

three otos (online to offline)

also known as o2o, namely "online to offline". The core of the business model of oto is very simple, which is to bring online consumers to real stores, pay online to buy offline goods and services, and then enjoy offline services

extended materials:

e-commerce is a business activity with information network technology as the means and commodity exchange as the center; It can also be understood as the activities of trading activities and related services in the form of electronic transactions on the Internet, intranet and value-added network. It is the electronization, networking and informatization of all aspects of traditional business activities

e-commerce usually refers to a wide range of business and trade activities all over the world, in the Internet open network environment, based on Browser / server application mode,

buyers and sellers do not meet each other to carry out a variety of business activities, to achieve consumer online shopping, online transactions and online electronic payment between merchants, as well as a variety of business activities, trading activities Financial activities and related integrated service activities are a new business operation mode

governments, scholars and business people in various countries have given many different definitions according to their own status and different angles and degrees of participation in e-commerce. E-commerce is divided into ABC, B2B, B2C, C2C, B2M, M2C, B2A (B2G), C2A (C2G), o2o, etc

At the same time, network marketing is also a proct of e-commerce, and for network marketing, it is necessary to make a good network marketing plan before doing it, so as to facilitate the implementation of the plan

since October 1, 2018, the Ministry of finance, the State Administration of Taxation, the Ministry of Commerce and the General Administration of customs have jointly issued the new regulations on tax exemption for e-commerce export enterprises in the comprehensive pilot zone of cross border e-commerce

3.

Transaction mode of bitcoin

bitcoin is e-cash similar to e-mail, and both parties need "bitcoin wallet" similar to e-mail and "bitcoin address" similar to e-mail address. Just like sending and receiving e-mail, the remitter pays bitcoin directly to the other party through a computer or smart phone according to the recipient's address. The following table lists some websites that download bitcoin wallets and addresses for free

a bitcoin address is a string of about 33 characters long, consisting of letters and numbers, always starting with 1 or 3, such as & quot& quot; Bitcoin software can generate address automatically, and it doesn't need to exchange information online, so it can be offline. More than 2 bitcoin addresses are available. Figuratively speaking, there are about two grains of sand in the world. If there is an earth in each grain of sand, then the total number of bitcoin addresses far exceeds the number of all the sand on all these "earths"

the bitcoin address and private key appear in pairs, and their relationship is just like the bank card number and password. A bitcoin address is like a bank card number, which records how much bitcoin you have on it. You can generate bitcoin address at will to store bitcoin. When each bitcoin address is generated, a corresponding private key of the address will be generated. This private key proves that you have ownership of the bitcoin at that address. We can simply understand the bitcoin address as the bank card number, and the private key of the address as the password of the corresponding bank card number. Only when you know the bank password can you use the money on the bank card number. Therefore, please keep your address and private key when using bitcoin wallet

after the transaction data of bitcoin is packaged into a "data block" or "block", the transaction is initially confirmed. When a block is linked to a previous block, the transaction is further confirmed. After six block confirmations in a row, the transaction was irreversibly confirmed. Bitcoin P2P stores all transaction history in a "blockchain.". The blockchain continues to extend, and once new blocks are added to the blockchain, they will not be removed. Blockchain is actually a distributed database composed of a group of scattered client nodes and all participants, which is a record of all bitcoin transaction history. Nakamoto predicts that when the amount of data increases, users hope that not all the data will be stored in their own nodes. In order to achieve this goal, he uses the hash function mechanism. In this way, the client will be able to automatically eliminate those parts that it will never use, such as some very early bitcoin transactions

4. I've also had this problem. The main thing is to write the correct wallet address in the address bar What I met is that the address bar can't be pasted), so I have to input it one by one manually. More than 30 letters, including case and number, should be 100% correct. I think it's the same thing.

5. Some require you to pay a small fee first, so that users can use the software for free. In fact, this is a common way to apply the personal information of mobile phone users. If the user is not alert and fills in the personal information directly, then criminals can steal your wealth or cheat your family and family!

6. Shanzhai coin is just a supporting role in the currency market. BTC LTC BCH eth are the leading roles.

7. BTC in Amway is the abbreviation of basic training course / basic technology course, which means "basic training course / basic skill course"

as far as I know, it was proposed by Fu Houjian, the legendary god of Amway

it's something that must be possessed in Amway business. It's not allowed to apply to other companies. Even within Amway employees, other system branches are not generally recognized

at the same time, the internal training routine of the system is: as long as you participate, no one will not graate

it's just a matter of personal qualification and chance to understand the deep meaning of the course and the way to success

although I don't know if you are going to engage in Amway business, from the experience I have participated in, for college graates who have no working experience, it's OK to experience if they have time

the reason is that its operation mechanism is similar to that of a regular company, which allows you to have some "feelings of employment" in advance

I always believe Chairman Mao's saying: "no investigation, no voice!"—— Therefore, "BTC" or "university courses" which is more helpful to find a job, only you can answer
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in terms of the current situation of ecation in China, schools basically only teach "book knowledge"
BTC should be regarded as a kind of professional quality ecation
- if you have this kind of quality, there is no practical value
- if you don't have this quality, maybe you can learn something from it?

8. You mean real name authentication of bitcoin trading platform? Contact customer service to help you solve it. I was also Xiao at the beginning. The customer service of lianhang.com told me.

9. ① Spray water. This is one of the most commonly used physical methods. Foam is reced by spraying water or water droplets to break bubbles that float on the surface. The dispersed sludge particles partially recovered the sedimentation performance, but filamentous bacteria still existed in the mixed liquid, so the foam phenomenon could not be fundamentally eliminated.
2. Add defoamer. Bactericides with strong oxidizing properties, such as chlorine, ozone and peroxide, can be used. There are also commercial reagents proced by polyethylene glycol and silicone, and mixed reagents of ferric chloride and copper pickling solution. The action of the agent can only rece the growth of the foam, but can not eliminate the formation of the foam. However, the widely used bactericides generally have negative effects, because excessive or improper dosing position will greatly rece the number of flocculent bacteria and the total biomass in the reaction tank< (3) rece the sludge age. Generally, the residence time of sludge in aeration tank is reced to inhibit the growth of Actinomycetes with long growth period. It has been proved by practice that when the sludge residence time is 5~6 D, the growth of Nocardia bacteria can be effectively controlled, so as to avoid the foam problem arising from it (8, 9). However, there are many inapplicable aspects to rece the sludge age: when nitrification is needed, the sludge residence time needs at least 6 days in cold season, which is in contradiction with this method; In addition, microthrix parvicella and some filamentous bacteria were not affected by sludge age
4. Return the supernatant of anaerobic digestion tank. Experiments have shown that the method of returning supernatant from anaerobic digestion tank to aeration tank can control the formation of bubbles on the surface of aeration tank. The main function of the supernatant of anaerobic digestion tank is to inhibit Rhodococcus bacteria, but this method has not achieved the same success as the laboratory in several wastewater treatment plants. Because the supernatant of anaerobic digestion tank contains high concentration of aerobic substrate and ammonia nitrogen, they will affect the final effluent quality, so they should be used cautiously
5. Adding special microorganism. Some studies have suggested that some special strains can eliminate the activity of Nocardia, including protozoa, nephromorpha, etc. In addition, increasing the number of predatory and antagonistic microorganisms can control some of the foam bacteria [5].
6 selector. The selector is to create various reaction environments (oxygen, organic load or sludge concentration, etc.) to select the priority microorganisms and eliminate other microorganisms. It has been reported that aerobic selector can control M. parvicella to a certain extent, but has no significant effect on Nocardia; The anoxic selector had a control effect on Nocardia, but had no effect on M. parvicella Hy6969132)


bubble problem many reasons, depending on the specific circumstances, in addition to the reasons mentioned above, the following may also cause a large number of foam.1. water phosphate content is too high will also proce
2. water contains the surface active substances
3., filamentous bacteria excessive growth will lead to bacterial gel carrying a large amount of air, thus forming stable on the water surface. It is difficult to remove the dross froth. It has been proved that excessive growth of filamentous bacteria is the main cause of foams formation.
4. if the waste water contains excessive fatty acids, the sludge retention time of the system is longer and the sludge reflux rate is low. The lower F/M ratio will cause excessive growth of filamentous bacteria, resulting in foam proction.


elimination and control:
commonly used are: surface high speed flow injection.
control of sludge residence time
increase of reflux ratio and F / M ratio
use of defoamer
the above problems are either low efficiency or high cost
at present, there is a kind of process called FFO, which can be used for reference from process design
FFO operation technology is the abbreviation of nutrient and deficiency technology, According to the difference of growth kinetics between filamentous bacteria and common bacteria, the two-stage live fouling method is designed (you should know how to do it)
the primary is high F / m, about 0.8, low reflux ratio is about 0.06, the secondary is low f / m, about 0.2, high reflux ratio is about 0.21
ha, only to control the growth of old silk, The problem is solved.


foam is divided into two main types: chemical foam and biological foam.
chemical foam is formed by the washing and stripping of aerated detergent and some instrial surface materials. With the increase of activated sludge, a large number of detergents or surface substances will be absorbed and decomposed by microorganisms, and the foam will graally disappear. Defoamer can be added, or powdered activated carbon can be added, which can not only absorb some active agents and harmful substances, but also provide biological carrier and increase biomass
effluent from treatment plants or floating scum with incomplete oil and lipids is easy to proce biological foam, which is mainly caused by Nocardia. Check your steam flotation tank to see if the air flotation tank has not been adjusted properly (including the steam water ratio, whether the releaser is blocked, whether the dosing system and water inflow are too large). The key is to get rid of the oil.

10. It means that there is a record in the Administration for Instry and commerce, legal registration, which can be found in the Administration for Instry and commerce.