Safety protection should be worn:
A) At all times when performing any work that requires PPE.
B) When working with liquids, vapors, or solid objects that are extremely hot or cold.
C) When handling refrigerant cylinders.
D) When working with power tools.
A
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A blowdown system for a cooling tower ____.
A. reduces the concentration of sediment in the sump B. provides extra draft for higher evaporation rate C. promotes vortexing D. provides a means for balancing the water flow
In Florida, using ceiling fans combined with raising a home's temperature ____° F will generate about a 14% net savings in annual cooling energy use.
A. 1 B. 2 C. 3 D. 4
When would a steam boiler be preferable over a hot-water-type boiler?
What will be an ideal response?
In ____, the emphasis is on how well the control system can follow changes in the reference or desired input signal.
A. servo systems B. process control systems