When working in the refrigeration and air-conditioning industry, matter is typically encountered in three states:

A) Chemical, plasma, electrical. B) Solid, liquid, vapor.
C) Animal, vegetable, mineral. D) Fahrenheit, Celsius, Kelvin.


B

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The coefficient of performance of the refrigeration cycle when operating as an air-conditioner is nearest:

A 5-ton ideal air-conditioner operates between 120 kPa and 800 kPa. The refrigerant is R134a.

A) 3.6
B) 3.9
C) 4.2
D) 4.6

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Selective herbicides affect almost all plants

Indicate whether the statement is true or false

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A Coriolis flow meter is a __________ type of flow meter.

A. volumetric B. weight C. mass D. velocity

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Word addresses include __________.

A. control file B. timer C. counters D. all of the above

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