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What medium gives us an intimate glimpse into the creative process of art? 

Which of the following best describes the carving process in sculpture? 

If an evaporator is leaking, it should be:

Technician A says almost all expansion valves have an inlet screen. Technician B says almost all evaporator pressure control valves have an inlet screen. Who is right?

Technician A says barrier hoses are used on all refrigeration systems originally equipped with R-134a. Technician B says barrier hoses must be installed on all systems retrofitted from R-12 to R-134a. Who is right?

Evaporators with expansion valves are being discussed. Technician A says the sensing bulb is located at the outlet tube of the evaporator. Technician B says the bulb can be clamped to the tube exterior and covered with insulation. Who is right?

Refrigerant recovery is being discussed. Technician A says you should always start by checking the refrigerant with an identifier. Technician B says you should always recover blended refrigerants into an R-12 container. Who is right?

The job of the desiccant is to _____.

Technician A says changing refrigerant from a gas to a liquid causes it to absorb heat. Technician B says the system refrigerant is used over and over. Who is right?

Technician A says screw type hose clamps are easy to install. Technician B says screw type hose clamps provide uniform pressure all the way around the hose and fitting. Who is right?