Timer relays are similar to other control relays in that they use a(n) ____________________ to control the operation of some number of contacts.
Fill in the blank(s) with the appropriate word(s).
coil
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Hydrogen storage tanks are usually constructed from ________
A) Steel B) Aluminum C) Carbon fiber D) Both B and C
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Temperature is the measure of:
A) The average kinetic energy in a substance. B) The average potential energy in a substance. C) The average amount of heat in a substance. D) The total amount of heat in a substance.
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List four NFPA codes that affect the residential construction industry.
What will be an ideal response?
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If coolant is not reused, it must be disposed of or recycled in an environmentally safe manner.
Answer the following statement true (T) or false (F)
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