What is the benefit of installing backflow preventers in parallel?
What will be an ideal response?
This arrangement makes servicing easier because the water supply is maintained while the unit is isolated for testing or repairs.
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Which of the following statements is false?
A. A binary mixture that exhibits vapor-liquid-liquid equilibrium has one degree of freedom, according to the Gibbs phase rule B. The composition where there is vapor-liquid-liquid equilibrium for a binary mixture is known as the eutectic composition. C. In heterogenousazeotropy, a binary mixture has a miscibility gap that bounds the azeotrope for the system. D. For immiscible liquid mixtures, the pressure at which vapor-liquid-liquid equilibrium occurs is just the sum of the pure component vapor pressures at that temperature. E. None of the above are false.
When fabricating pre-assembled mats, the perimeter joints should be tied at 100 percent, and the interior intersections at _____.
a. 20 percent b. 25 to 50 percent c. 75 to 80 percent d. 100 percent
Electrons located in the outer shell of an atom are known as ____ electrons.
a. magnetic b. orbit c. nuclear d. valence
Why must refrigeration systems used on trucks be able to operate at different capacities?
What will be an ideal response?