air conditioner
building
caucasian
checking
conditioner
cooling
device
digital
electric
electrician
employee
energy
engineer
equipment
factory
female
hardhat
helmet
industry
inspecting
installation
manager
measuring
multimeter
occupation
operator
orange
outdoors
power
repairing
roof
safety
service
smiling
supervisor
system
technician
technology
tester
using
ventilation
vest
voltage
woman
working