____ are cold-rolled Z-sections used in the walls of the building that serve as principal structural members attached to the building's frame.
A. Eave struts
B. Girts
C. Purlins
D. Trusses
Answer: B
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Los controladores de motores se cubren en:
a. NEC® Artículo 430, Part III. b. NEC® Artículo 430, Part IV. c. NEC® Artículo 430, Part VII. d. NEC® Artículo 430, Part X.
The chisel plow:
a. turns soil to mix the crop residue, livestock manure, lime, and fertilizer b. leaves the crop residue on the surface of the soil c. leaves a large ditch for irrigation purposes d. is no longer used because it encourages erosion
Transformers with only one winding are called ____________________.
Fill in the blank(s) with the appropriate word(s).
Using the differencing property of the DTFT and the transform pair, 
find the DTFT of (1/2) (? [n + 1] + ? [n] ? ? [n ? 1] ? ? (n ? 2) ) . Compare it with Fourier transform found using the table.