To close the control circuit and start a system, a remote bulb thermostat depends on a _____
a. bimetal strip that expands or contracts
b. refrigerant-filled bulb that responds to temperature changes
c. mercury-filled bulb that responds to temperature changes
d. thermocouple that changes its resistance as the temperature changes
b
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With Ohm’s law, ____ must be expressed in ohms.
a. resistance b. conductivity c. voltage d. current
When using the rule-of-thumb estimation method, materials _____ .
A. can be grossly overestimated B. should not be grossly overestimated or underestimated C. can be underestimated but never overestimated D. should not be overestimated
What are the contract documents, and why are they so important?
What will be an ideal response?
In times of drought, trees and shrubs do not require watering
Indicate whether the statement is true or false