Why must an arcing device be contained within a special enclosure?
a. To prevent the ignition of hazardous vapors
b. To keep out dust and protect the device
c. To allow gases and vapors to enter the conduit system
d. To lock out any unauthorized users of the device
a. To prevent the ignition of hazardous vapors
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Simple fittings, such as elbows and tees, are ____ represented.
A. descriptively B. iconically C. textually D. pictorially
An effective manager is able and willing to delegate _______
A) Responsibility for assignments B) Accountability for the results C) Tasks only; the manager is the one who is responsible D) Both A and B
As an air-conditioning and refrigeration technician, which of the following states of matter will you use in your job?
A) Gas and liquid B) Solid only C) Liquid and solid D) Solid, liquid, and gas
A pressure-time-temperature defrost system goes into defrost with very little frost on the bottom of the coil. Describe the major cause of and solution to this problem
What will be an ideal response?