The economic service life of an asset is: (choose one)
(a) The length of time required to recover the first cost of the asset
(b) The time when the operating cost is at a minimum
(c) The time when the salvage value goes below 25% of the first cost
(d) The time when the AW of the asset is at a minimum
(d) The time when the AW of the asset is at a minimum
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When reference is made to ____, the time function may start on one or more of the contacts at energization, or at any time after energization during a preset time cycle.
a. sensors b. time-delay relays c. timers d. pressure switches
____ should fit snugly against top and bottom plates and are cut to fit tightly around plumbing and electrical boxes.
A. Fascias B. Soffits C. Batts D. Blankets
An investigation should be reported as soon as all emergency procedures have been accomplished
Indicate whether the statement is true or false
Class B fires are fires that burn what type of material?
A. flammable liquids B. ordinary combustibles C. combustible metals D. electrical equipment