Ranking of regular bitcoin trading platforms

1. If you don't know anything, you can ask me.

2. After digging up bitcoin, you can trade in the following markets and exchange it for cash. It should be noted that bitcoin has just sprung up, and all trading markets may be attacked by hackers or encounter other unknowable phenomena. Therefore, the best way is to keep your money or bitcoin in your trading market account
recommended area of bitcoin trading platform: btc-e supports emerging e-money transactions such as LTC
btcchina China fxbtc China mtgox is the largest and oldest in the world, which means that it is not convenient for China to invest
these four trading areas are recommended by green tea Xiaobian. You can choose to trade in these four bitcoin trading areas ~
summary of bitcoin trading platform: vibrex bitstamp bitcoin China Nanaimo gold bitcoin central BTC ebitinstant Mt, In order to avoid being cheated, we are not responsible.

3. According to the theme, the work done by gravity is equal to that done by escalator:
the kinetic energy at the beginning and end is 0.
W + 0 = MGH + 0
W = 500 * 4 * 10 = 20000j