Trunk pipeline transport of oil and oil products. Pipeline valves. Calculation method of required hydraulic and cavitation characteristics of control valves for selection in automatic control systems
Low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 1. General requirements
State system for ensuring the uniformity of measurements. Libraries of mass spectra of psychoactive compounds and their metabolites. General requirements (requirements for data reliability, completeness of information, updating and content)
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