What is the purpose of the hot and cold decks on a multi-zone system?

A) they provide simultaneous hot and cold air
B) the hot deck is energized and the cold deck is not
C) the deck in use is called the hot deck
D) the provide places to stand that are warm and cool


A

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Which of the following statements concerning applications or capabilities of soil moisture measuring devices is (are) true for the use of a drying oven and balance?

A) requires "destructive sampling" for each measurement B) good to turn on automatic irrigation at -5.0 kPa C) used to turn on irrigation when soil moisture potential reaches -20.0 kPa D) gives same reading for loamy sand and silt loam if both contained 15% moisture E) both A and D

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A. A only B. B only C. Both A and B D. Neither A nor B

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Mechanically held contactors and relays are often referred to as ____ contactors or relays.

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