As a safety precaution, electric duct heaters should be wired so that they will not operate unless:
A) Extra heat is needed. B) Other forms of heat are not operating.
C) The second stage of the thermostat is closed. D) The fan is operating.
D
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Lighting fixtures that distribute 60% to 90% of their emitted light downward but also distribute 10% to 40% upward to illuminate the ceiling are classified as _____.
a. direct lighting fixtures b. diffused lighting fixtures c. semi-direct lighting fixtures d. direct-indirect lighting fixtures
Explain why sidewalks need grooves across the surface
What will be an ideal response?
In temporary fiberglass pipe runs, the method often used for joining the pipe is the _____ method.
a. Redi-Thread b. butt and strap c. bell-and-spigot d. EUE threaded
What are the three components of an Agriscience Fair project?
What will be an ideal response?