Dry-cleaninguses perchloroethylene, trichloroethane and trichloroethylene.
It uses the technique defined by chemists as extraction.
Tailor
Polygraph examiner
It means "an activity in which a person is engaged".
it is abso priest.
Pendulum Terapy occupation uses pendulam
Engeneers, doctors, things like that.
It is plumbing or plumber.
could be a bricklayer
An actuary does those things.
Probably car or truck-- typically an artist uses paint in his occupation.
An electrician would be one person that would use them.