If you have a lot of time to measure the volume of the same liquid or granular materials, make the appropriate mark on the measuring circle, glued at the right level strips of adhesive medical tape. At the same time can be done on them and the labels which are specified died.
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Have water pipes in homes, as in the system of cold and hot water, a so-called shut — off valves- the valves closing off the flow of water in taps. The design of such valves may be...
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