https://pastein.ru/t/orV

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1. 
http://profil.adu.by/mod/book/view.php?id=3840#:~:text=%D0%92%20%D1%81%D0%BE%D0%B2%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D0%BD%D0%BE%D0%BC%20%D0%BE%D0%B1%D1%89%D0%B5%D1%81%D1%82%D0%B2%D0%B5%20%D0%BF%D0%BE%D1%82%D1%80%D0%B5%D0%B1%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%8D%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D1%8D%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D0%B8,%D0%BF%D0%B5%D1%80%D0%B5%D0%B4%D0%B0%D1%87%2C%20%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%B0%D1%8E%D1%89%D0%B8%D0%B5%20%D0%BD%D0%B0%20%D0%BF%D0%BE%D1%81%D1%82%D0%BE%D1%8F%D0%BD%D0%BD%D0%BE%D0%BC%20%D1%82%D0%BE%D0%BA%D0%B5.
2. https://sat.bntu.by/jour/article/view/2301?locale=ru_RU
3.
https://aquaterm.by/skachat/poleznyie-stati/effektivnoe-energosberezhenie.html
4.
https://energoeffect.gov.by/