Tiansuanli

2. 10 yuan to buy mini Miner: 0.18 yuan / day, 180 days
50 yuan to buy small Miner: 1.03 yuan / day, 170 days
250 yuan to buy medium Miner: 5.47 yuan / day, 160 days
1250 yuan to buy large Miner: 33.34 yuan / day, 150 days
6250 yuan to buy giant Miner: 180.58 yuan / day, 140 days
computing power
every miner invested under the umbrella provides computing power for leaders. It must be a mining machine in operation
micro: 1 computing power
small: 5 computing power
medium: 25 computing power
large: 125 computing power
giant: 625 computing power
Dynamic award
1:1 burn: if you proce 3 coins on the same day and a single member under the umbrella proces 5 coins, Then take this member leadership award according to the output of 3 coins

ordinary Miner: need a mining machine in normal operation
enjoy 5% of the output of the first generation on the same day

first level Miner: the computing power reaches 100, directly push three miners
give a small mining machine as a gift< The output of the second generation is 2%

on the same day of starting the second generation

the second level Miner: the calculation power reaches 500, the direct push three first level miners
give a medium-sized miner
3% of the third generation members

the third level Miner: the calculation power reaches 2500, the direct push three second-level miners
give a large miner
4% of the fourth generation members

the fourth level Miner: the calculation power reaches 12500, Direct push three third-class miners
present a giant miner
open 5% of the five generation members

the currency is 0.1 yuan, the issue price
the total amount of coins that can be mined is 10 million
after the total amount of coins mined reaches 5 million, it will go to the exchange.

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4. Aprotic solvent is also called aprotic transfer solvent. The proton self delivery reaction of this kind of solvent is very weak or has no self delivery tendency. According to their interaction with solute, they can be divided into dipolar aprotic solvent and inert solvent. This kind of solvent can be divided into: aprotic nonpolar solvent, such as benzene, ether, carbon tetrachloride, etc; Aprotic polar solvents, such as dimethyl sulfoxide, N, N-dimethylformamide, acetone and so on, because the molecules of aprotic polar solvents have polarity, they will affect solute molecules and proce solvation effect. Protonic solvent contains - Oh, - NH, such as methanol, which will form hydrogen bond with nucleophilic reagent and make nucleophilic reagent solvable. Aprotic solvent, also known as proton inert solvent, can not give protons in the reaction system can be called aprotic solvent. Aprotic polar solvents, such as acetonitrile (CH3CN), dimethylformamide (DMF), dimethyl sulfoxide (DMSO), hexamethylphosphoryltriamide (HMPA), etc. Aprotic polar solvents can solvate cations, especially metal cations. Protonation gives a hydrogen ion, which is positively charged, making it more electrophilic. O. The coordination of H + on N and other elements can be simply understood as combining with proton, that is, combining with a proton. Generally, the substance has lone pair electrons, so it can combine with a proton through coordination bond. For example, when H2O becomes H3O + NH3 becomes NH4 +, different substances have different protonation ability, and some substances with larger dipole moment often have weak protonation ability

5. In 1946, the first electronic computer appeared in the world. Today, it has been more than 30 years. In this short time, it has made great progress. The computing power of ordinary computers has reached 40 million times per second, faster than the speed of calculation and abacus
Why do computers work so fast
because the arithmetic unit and controller in the electronic computer are composed of bistable circuit and various "gate" circuits; In other words, they are calculated by using the high-speed transmission characteristics of electricity. We know that the transmission speed of electricity is 300000 kilometers per second, which is very fast. Therefore, the computing speed of the electronic computer is very fast< Secondly, the operation of electronic computer is very simple. No matter how complicated the problem is, as long as the personnel design the calculation program in advance and send the calculation program together with the original data to the computer, it can automatically calculate the original data step by step according to the manual program. Each operation is very simple. For example, to add, you only need to do 1 + 1 = 10, 1 + 0 = 1, 0 + 1 = 1, 0 + 0 = 0. There are only four cases (subtraction, multiplication and division are the same). Such a simple calculation, primary school students can quickly work out. Because the calculation is simple, the arithmetic unit can also be very simple; In other words, the bistable circuit and "gate" circuit are needed less, and the electronic path is also less, which makes the operation speed faster.

6. There are 86400 seconds in a day, and the unit MH / s you provide is not the capacity unit, so please calculate by yourself.

7.

How to learn high school mathematics well? First of all, we need to summarize the skills of answering questions

now the subject of mathematics is also a must to learn content, but now there are many children do not like this subject, because they can not do these questions, leading to the subject pull their total score, how to learn high school mathematics? What are the types of math problems

How to learn high school mathematics well also needs us to explore some learning skills and find our own suitable methods, which is still very important

8. I feel that mathematics is to practice more and think more. For you, there may be two situations.
① you usually press your heart to do the problem, which is very good, with high accuracy and fast speed. That's the mentality of the examination. It has to be adjusted. However, I think it's a good thing to do. I should be confident. Exams don't usually panic

then you must not spend a certain amount of time on mathematics, which leads to the calculation problem. Few people are born with a strong computational ability. According to my own experience in high school, I also like mathematics very much, but the calculation is easy to make mistakes, and the function of grade one, I didn't understand it until grade three when I began to simulate. So what was I doing in the past two years? It is to do the questions repeatedly, deepen the impression of each calculation link, and practice the calculation speed at the same time. Mathematics must have a certain amount of questions in this course, otherwise it is useless even if you understand it. It's very important to make questions. Don't be afraid of hard work. Try to do as much as possible and sort out the wrong questions. If you don't have time to clip the wrong papers together, it's convenient to review them from time to time. There is no shortcut, but if you take the time to do the above things, you will get something

the skills of accurate calculation are different for everyone, because there are no specific examples. I suggest you use more special values, construct more special situations, special polyhedrons and special functions for small topics. Try to simplify the calculation and rece errors

try to use the geometric angle to solve the big questions first, so that you don't have a bottom in your mind, and the final answers are quite different, but you don't find it.