A 3H pencil is used to draw the object lines.
Answer the following statement true (T) or false (F)
False
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In very warm climates, thermal insulation ____.
A. has no effect B. is used to aid the flow of heat in both directions C. is used to resist the flow of heat from the inside to the outside D. is used to resist the flow of heat from the outside to the inside
What may be safely used to check a system for leaks at pressures of around 100 psig?
A) Neon B) Hydrogen C) Nitrogen D) Oxygen
Which type of inductor core material is likely to produce the least inductance?
A) air B) iron C) ferrite
Fire dampers are typically required in:
A) All commercial buildings with ductwork passing through firewalls. B) All buildings that have ductwork. C) The chimney of all residential fireplaces. D) All residential buildings.