Which of the following is an example of an HCFC refrigerant?

A. R-12.
B. R-22.
C. R-32.
D. R-134a.


Answer: B

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What two advantages does the electro-permanent chuck have over an electro-magnetic chuck? (choose two)

A) It generates more heat than the electromagnetic chuck B) It retains holding power if an electrical power failure occurs C) It is less subject to corrosion D) It generates less heat than the electromagnetic chuck

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How would high levels of inhalation of a refrigerant affect an individual?

A) The skin may burn. B) Delusions may be possible. C) No adverse reaction would occur. D) Cardiac arrhythmia may occur

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The removal of objects and unwanted structures in the construction area is done during _____.

a. clearing and grubbing b. boring c. clearing and trenching d. ripping

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What is the difference between polyacrylate seals and silicone seals?

What will be an ideal response?

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