FCD virtual currency
bitcoin is a consensus network, contributing to a new payment system and a fully digital currency. It is the first decentralized peer-to-peer payment network, which is controlled by its users without a central management organization or middleman. From the user's point of view, bitcoin is much like Internet cash. Bitcoin can also be regarded as the most outstanding three style bookkeeping system
lightcoin is an unsuccessful experimental component of bitcoin, dogcoin is the currency of reward culture, and the main one is small reward
Fuyuan coin focuses on the coin business circle mentioned by Mr. Shaqian. Fuyuan coin is proced in the operation and circulation of member enterprises of the global jewelry Association. The purchase of jewelry procts of member enterprises can obtain certain reward of Fuyuan coin. Fuyuan coin can be bought and sold freely on the trading platform, can also purchase jewelry procts, and can also be stored in the wallet. New Fuyuan coin can be generated through the POS mechanism. It is a closed-loop application business circle.
Hello, it's illegal. In 2017, CCTV announced the list of 350 fund pyramid schemes, and MBI game financing is on the list
With its instry as the support and MFace social platform as the core, MBI will issue a limited amount of 60 million virtual currency - "barter currency" on MFC Fuping financial management platform to the world, which will be sold out and never be added 
a so-called "only up but not down" MFC game, token financing, through the way of person to person, began to spread crazily all over the country, the participants were mostly middle-aged and elderly people in their 50s and 60s. Under the temptation of high returns, no matter how hard their families tried to dissuade them, the addicts were still unmoved, like moths to the fire, putting their savings for many years, Even pension money is pouring out
for a while, where "MBI game finance" goes, years of hard-earned money has been swept away. Needless to say, originally warm and harmonious families have no peace, relatives turn against friends and become enemies, desperate families have no way to ask for help from heaven, and they can't call back their families who are deeply mired in wealth
extended data
legal
legal: refers to people's behavior that meets the legal requirements
The legitimacy ofcan be understood in broad sense and narrow sense
the broad sense of legality, that is, legal acts in the sense of rule of law, refers to all acts that are not prohibited by law. In fact, it is a behavior tolerated by law and not investigated. As the saying goes, "if the law does not prohibit it, it is allowed" and "if there is no express provision in the law, there will be no punishment". It has become a principle of rule of law, which is "a legally prescribed punishment for a specified crime" in the criminal law
In this sense, as long as it is not illegal, it is legal. The broad sense of legal behavior includes the narrow sense of legal behavior and non legal behavior (neutral behavior). From the perspective of the rule of law, the significance of the division of legal and illegal acts lies in the maximum protection of democracy and freedom, the prevention of autocracy and the abuse of power by the government. As for government power, the principle of rule of law means that "if the law does not permit, it is prohibited"legal behavior in a narrow sense, that is, legal behavior in the sense of legal adjustment, refers to the behavior implemented by the subject under the control of his own will, which is in line with the legal norms and is beneficial or at least harmless to the society, and thus protected by law. The legal act in jurisprudence generally refers to the legal act in a narrow sense. It has the following characteristics:
(1) from the perspective of legal evaluation, it is a legally meaningful act, that is, an act within the scope of legal adjustment. This distinguishes it from non legal acts
(2) from the perspective of the legal nature of the behavior, it is in line with the requirements of the legal norms, which is reflected in the compliance with the behavior mode guided by the norms
(3) from the perspective of behavioral consequences, it usually proces the result of meeting social needs, so it is beneficial or at least harmless to society
(4) from the perspective of the will of the state, it is an act demanded, hoped or permitted by the state, and the law has corresponding obligations to ensure its realization (5) from the perspective of legal consequences, it causes positive legal consequences and is protected by national laws. The above-mentioned second to fifth characteristics distinguish legal acts from illegal acts
source: Internet: Legal
1) ce ⊥ BD, CE = BD
2) the same as ①, proving that abd, ace are congruent
AB = AB, ad = AE, ∠ bad = ∠ CAE = 90 + ∠ CAD
both sides and the included angle are equal, triangle congruent
2) make BC vertical line through a, set the perpendicular foot as o
because DF ⊥ ad, So ∠ ADO + ∠ FDC = 90
AOD = ∠ FCD = 90
so △ AOD ∽ DCF
od / CF = AO / DC
CF = od * DC / AO
in the right triangle AOC, ∠ ACO = ∠ ACB = 45, so OC = Ao
and OD + DC = OC = OA, and OD = x
CF = x (oa-x) / OA
x is a variable, OA is a constant
that is to find the minimum value of function (x-oa / 2) ^ 2, Obviously, x = OA / 2
CF max = 1 / 4oa = √ / 8ac
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