Переведите предложения на русский язык, определите вид трансформации (перестановки, добавления, опущения, замены) и обозначьте трансформацию - 1 - Gas burners heat water in conventional boilers. 2 - Can I be of any assistance to you? 3 - Solar energy system collects solar radiation and converts it into useful thermal energy. 4 - The most extensively used fuels are coal, natural gas and heavy fuel oil. 5 - The use of additional generating facilities is justified. 6 - The experiment was not carried out until the precisely required conditions had been created in the lab. 7 - Plastics as well as metals are widely used nowadays in various branches of industry. 8 - The cause and amount of water loss and waste are approximately known. 9 - We are looking for preliminary information only and would like you to send us details of your range. 10 - The tracking collectors are controlled to follow the sun throughout the day.