What are the criteria to determine how many emergency service staff must be present in a company?
There are no precise criteria, but it is necessary that the company there is at least the presence of an attendant, so considering absences due to illness or holidays, shifts and the possible use outdoors, be necessary to find an adequate number of workers.
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What are biomass?
Reference: Energy from Environment What are biomass and how do we use them? Biomass are organic...