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  1. I don't know... simple engineering systems whose operation is static, does not depend on external and internal conditions. Such systems include: water supply, sewage networks, gas pipeline, hot water supply, dust removal systems, power supply, low-current devices. The process of execution and acceptance of such systems does not require special technical techniques and is limited to assessing the quality of work, a bona fide visual inspection of line runs and adjustment or adjustment of individual devices. This here is not difficult, but the terrarium and the insta