Which cellular structure is unique to plant cells?  

When evacuating an A/C system, the vacuum pump should remain on and connected to the system for at least 30 minutes after reaching _____ inches of mercury (in. Hg).

The type and amount of refrigerant that should be in a vehicle’s AC system can be found:

Thermal expansion valves are being discussed. Technician A says the TEV regulates the refrigerant flow to the evaporator by balancing the inlet flow to the outlet temperature. Technician B says the TEV is closed when the temperature at the outlet of the evaporator is high. Who is correct?

The BILEVEL mode is being discussed. Technician A says that air may be directed to the panel and floor in the cooling mode. Technician B says that air may be directed to the panel and floor in the heating mode. Who is correct?

In the MAX cooling position the main source of air is from

The air box typically contains two doors to control temperature and function. They are known as the blend door and the __________ door.

Tech A says the bypass hose is used to regulate coolant system pressure. Tech B says that radiator hoses should be checked during routine maintenance. Who is correct?

Technician A says that mode doors may be electrically operated. Technician B says that mode doors may be vacuum operated. Who is correct?

The purpose of the desiccant bag in a receiver/drier or accumulator is to ______.