Technician A says before handling a component that is sensitive to electrostatic discharge, touch a known good ground. Technician B says before handling a component that is sensitive to electrostatic discharge, touch a known good power source. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer: A
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Sheep breeds have been developed for three major purposes: wool, meat, and _____.
Fill in the blank(s) with the appropriate word(s).
Calculate the value of Zab in the network of Fig. 9.79.
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What would the mixed air temperature be for a system with 20% outdoor air if the outdoor temperature is 90°F and the return air temperature is 80°F?
A) 0.8 × 90°F =18°F; 18°F + 80°F = 98°F mixed air temperature B) (90°F + 80°F) × 0.4 = 68°F C) (90°F + 80°F)/2 = 85°F mixed air temperature D) 0.2 × 90°F =18°F; 0.8 × 80°F = 64°F; 18°F + 64°F = 82°F mixed air temperature
Fixed windows are popular when a large unobstructed area of glass is required to take advantage of a view or to allow solar heat gain.
Answer the following statement true (T) or false (F)