The use of mobile phone contact. At present, mobile technology development, rather than just talking only. I can connect to internet. So it is the communication system to work, or work at home. They went to work at the office, not less. Which can reduce energy consumption by up •. The use of mobile phones, personal appointments. Or appointment of the exact functional operation to reduce the risk of default. Or the use of mobile phones close relatives, friends say something instead of traveling to meet from time to time, it saves fuel.
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