What safety device should be installed where unvented space heaters are being used?
What will be an ideal response?
A carbon monoxide detector.
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What is the cause of color? Why do some objects appear blue to the eye while others appear red? Is the color of a surface at room temperature related to the radiation it emits?
What will be an ideal response?
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The standby time for operation of an alarm system on secondary power in a household system must be no less than _____.
a. 10 hours b. 12 hours c. 24 hours d. 60 hours
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Inclining the sides of a trench in a series of steps to prevent cave-ins is known as _____.
a. backstepping b. benching c. tiering d. pyramiding
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Which component is typically used to set rear camber in many vehicles?
A) Tie rod end B) Eccentric cam C) Eccentric bushing D) Either A or B
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