Which type of economizer is capable of choosing between the use of outside air or return air, based on the enthalpy of the two airstreams?
a. All economizers
b. Enthalpy economizers
c. Integrated economizers
d. Dry-bulb economizer
c. Integrated economizers
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PROBLEM 2.39 Two cylindrical rods, AC made of aluminum and CD made of steel, are joined at C and restrained by rigid supports at A and D. For the loading shown and knowing that Ea = 10.4 ? 106 psi and Es = 29 ? 106 psi, determine (a) the reactions at A and D, (b) the deflection of point C.
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Why are most foods frozen as quickly as possible?
What will be an ideal response?
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L umber inspection criteria are defined by _____.