Although It Is No Longer Used in the Manufacturing of New

question 20

Multiple Choice

Although it is no longer used in the manufacturing of new air conditioning systems, the number of existing systems using __________ is large, so technicians will be encountering this refrigerant for many years to come.

• A) R-22
• B) R-12
• C) R-410A
• D) R-134a

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Definitions:

Hands-On

Involving active participation and direct experience in learning or doing something, typically to gain practical skills.

Cognitive Development

The process of growth and change in intellectual abilities, including thinking, reasoning, problem-solving, and memory, across the lifespan.

Active

Engaging in or involving action, movement, or motion.

Head Start

A program in the United States that provides comprehensive early childhood education, health, nutrition, and parent involvement services to low-income children and families.