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the general public,，推荐阅读新收录的资料获取更多信息
After a short while it was then possible to log in as root. From the logs it appears as though the machine was last booted in the year 2000 — or at least it thought that was the year! It was also possible to search the logs to see what the Ethernet address was when it was previously booted, which is useful as we could then go back to the OBP monitor and reprogram the IDPROM with this address. Of course, it is always possible that this wasn’t the original MAC address and it had been set to some random value when the original one had previously been lost.，这一点在新收录的资料中也有详细论述
Путин прокомментировал рост цен на нефть и газ19:24。业内人士推荐新收录的资料作为进阶阅读
One last cool thing. There’s yet another type of friction called rolling friction. You see this on a truck with rubber tires: Under the weight of the vehicle, the tires flatten out on the bottom. So when the truck is moving, the tires are continually being deformed and returning to their proper shape. This flexing heats up the tires, and where there’s heat there’s energy loss. Since energy is conserved, this means the wheels slow down, and the truck has to burn more fuel to maintain its speed. Trains, on the other hand, have very little rolling friction, because their steel wheels barely deform at all. This makes trains a more energy-efficient mode of transportation.