A coldframe is a wooden or concrete block frame with heat supplied by solar radiation through glass or other transparent coverings
Indicate whether the statement is true or false
T
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What factors play a role in the performance of DCmotors?
What will be an ideal response?
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The normal evaporator superheat of most commercial refrigeration units is _______.
a. 5° b. 10° c. 15° d. 20°
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The purpose of venting in a roof is to _____
A) allow heat and moisture to escape the building B) allow cold air to enter the building C) add moisture to the warm air rising from the floors below D) allow cold air to escape the building to make room for warm air
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The adjustment device used for low atmospheric pressure conditions is called the thermostat ____ adjustment control.
A. PTC B. current relay C. altitude D. mullion
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