What is the purpose of a cooling tower?
A) To add humidity to the outdoor air when it is too dry
B) To reduce the temperature of cooling water by evaporation
C) To evaporate the excess water created in an industrial process
D) To produce cool air by evaporation
B
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Commercial molds for slush casting are usually made from ____ because it allows rapid cycling and lower tooling costs. ?
A. ?aluminum B. ?wood C. ?acrylic D. ?copper
The pet industry is declining
Indicate whether the statement is true or false
Compressor capacity can be controlled by:
A) Discharge valve throttling. B) Voltage or current modulation. C) Cylinder unloading or hot gas bypass. D) Blocking the discharge gas with a solenoid.
Headlamp circuits consist of which of the following?
A. headlamp switch B. relays C. dimmer switch D. all answers are correct