What type of refrigerant oil is used in R-134a systems?

A) POE
B) PAG
C) Mineral
D) Either A or B, depending on the vehicle


D) Either A or B, depending on the vehicle

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Growing transplants in flats containing many unit cells is called ________.

Fill in the blank(s) with the appropriate word(s).

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Trees or shrubs that are planted together so they can point out a special feature, provide privacy, or

create a small garden area are known as a:

a. cluster planting c. group planting b. border planting d. landscape planting

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Where is the drain p-trap of a walk-in freezer supposed to be located?

a. Only outside the box b. Only inside the box c. Either outside or inside the box d. Inside the box if it has heat tape around it.

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_____ are provided by manufacturers and suppliers in order to provide detail of the chemical composition and precautionary information for all products that can present health or safety hazards.

A. Warning labels B. Hazardous wastes disclosures C. Material Safety Data Sheets D. Repair manuals

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