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By 2020, the Middle Class Will Grow to Constitute Over

question 52

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By 2020, the middle class will grow to constitute over ________ of the world's population.


Definitions:

Low-Side Pressure

Refers to the pressure in the low-pressure section of a refrigeration or air conditioning system.

High-Side Pressure

The pressure within the condenser side of a refrigeration or air conditioning system, often indicating the pressure of the refrigerant as it is condensed into a liquid.

Damaged Compressor

Refers to a compressor that has suffered wear, tear, or breakage, impairing its functionality in systems like air conditioning or refrigeration.

Sight Glass

Allows a technician to see the flow of a liquid in a line (such as fuel or refrigerant) for diagnostic purposes.

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