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isaphttp://webisa.webdatacommons.org/prov/
n4jobbank.gc.
isahttp://webisa.webdatacommons.org/
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provhttp://www.w3.org/ns/prov#
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isa:111777722
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prov:Entity
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Estimate the number of workers required to install and repair mechanical systems such as plumbing, fire protection, heating and ventilation. (2) Estimate the quantities of materials needed for work orders, taking into account extra quantities required for modifying parts and replacing old equipment.
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n4:ca
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isap:272678992
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isa:111777722