Although stucco is typically applied directly to the foundation, traditional brick or stone that ranges between ____ thick must be installed on a footing or brick ledge that requires additional concrete in the foundation structure.
A. 1" to 3"
B. 2" to 6"
C. 4" to 12"
D. 6" to 10"
Answer: C
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The three major types of circuit breakers are air, oil, and ____.
A. water B. vacuum C. alcohol D. mercury
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In general, the night temperature in greenhouses should be cooler than the day temperature to mimic natural conditions
Indicate whether the statement is true or false
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The primary to secondary resistance should be relatively low
Indicate whether the statement is true or false
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The limit switch is used on the electric element assembly to ____.
A. start the unit if the thermostat malfunctions B. ensure that the fan stops when the unit cools down C. start the unit prematurely on a cold day D. open the circuit to the element if the furnace overheats
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