What refrigerant is currently being used in refrigeration equipment?

A. R-12 and R-404a
B. R-22 and R-502
C. R-134a and R-12
D. R-134a and R-404a


Answer: D

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VARs stands for ____________________.

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

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The higher the cetane rating, the ________

A) Easier the engine starts when cold B) Easier the engine starts when hot C) More power the engine produces D) Both B and C

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The first two color bands represent:

A) The first two digits of the resistor value. B) The multiplier for the resistor value. C) The resistor tolerance. D) The color frequencies of the waveform.

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A storage tank in a filling station measures 9 feet in length and 3 feet in diameter. What is the capacity of the tank to the nearest gallon?

A. 466 B. 471 C. 476 D. 481

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