Claus is a secondary school teacher with training in HVACR. He wants to join an organization that promotes the betterment of HVACR students and programs. Which organization is it?

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

Fluids at rest possess no flow energy. a)- true b)- false