When the bimetal coil in a cooling-only thermostat heats up and unwinds, the mercury switch _____.

a. closes its contacts and shuts down the system
b. closes its contacts and starts the cooling system compressor
c. opens its contacts and initiates defrost
d. opens its contacts and stops the cooling system compressor


b. closes its contacts and starts the cooling system compressor

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A new employee very often draws the main elevations.

Answer the following statement true (T) or false (F)

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A common use of shading is to show ____ of a surface.

A. curvature B. the axes C. actual dimensions D. bounding boxes

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Which of the following pieces of information helps explain why an animal was raised?

a. environment c. feed b. available labor d. all answers

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What factors must be controlled to achieve acceptable indoor air quality?

A) Air ventilation, filtration, and distribution B) Temperature, humidity, velocity, and pollutant level C) Chemical pollutants, biological pollutants, and ventilation D) Building pressure, infiltration, and ventilation

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