id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-518		cet-518		6	.pdf	application/pdf	2808	136	42	Quality and cost value of the final product, as well as the service life of the equipment and industrial safety level, depend on the efficiency of water management systems. For example, technically prepared or demineralized water can be used for distillation; cooling is carried out with circulating water; heating – with water vapour and the drainage can enter either the system of water treatment or the sewage collection system.	cache/cet-518.pdf	txt/cet-518.txt