When replacing an air-conditioning component, all of the following regarding refrigerant oil are true except: a. the oil charge stamped on the compressor should be added to the system. b. the old oil should be replaced with fresh oil. c. the old oil should be drained from the component and measured. d. the oil removed during refrigerant recovery should be measured.

Which type of respiration takes place when there is no oxygen present

What is the difference between a scientific hypotheses and a scientific theory?

How do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.