機器
alarm
alert
background
caution
checking
chemical
connection
contai
container
control
danger
emergency
equipment
extinguish
extinguisher
extinguishing
fighting
fire
fire extinguisher
fire hydrant
firefighter
flame
foam
gauge
handle
hazard
heat
help
holding
horizontal
human
indoors
industrial
industry
isolated
measurement
metal
no people
object
office
panel
person
pipeline
precaution
pressure
prevention
professional
protection
pump
red
safety
security
service
smoke
sprinkler
system
technology
tool
wall
warning
water
watercourse
work