System reliability: A male electrician smiles with confidence as he performs routine checks and inspections at the electrical substation.
Palabras clave
men at work,
construction,
engineer,
industry,
helmet,
work,
safety,
factory,
people,
builder,
industrial,
building,
working,
warehouse,
business,
architect,
hard hat,
occupation,
job,
site,
equipment,
engineering,
foreman,
construction worker,
hat
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