Which of the following is a way to maintain organic matter in the soil?
a. Leaving crop residues
b. Extensive use of herbicides
c. Planting the same crop each season
A
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Problem 1.65 A steel loop ABCD of length 5 ft and of 38-in. diameter is placed as shown around a 1-in.-diameter aluminum rod AC. Cables BE and DF, each of 12-in. diameter, are used to apply the load Q. Knowing that the ultimate strength of the steel used for the loop and the cables is 70 ksi, and that the ultimate strength of the aluminum used for the rod is 38 ksi, determine the largest load Q that can be applied if an overall factor of safety of 3 is desired.
Discuss how to determine the location of the building using the site plan.
What will be an ideal response?
Todos los cables de multiconductores de más de 600V (excepto cable de Tipo MC) deben separarse mediante un divisor sólido de cables de valor nominal inferior a:
a. 240V. b. 480V. c. 600V. d. 1.000V.
Predictable errors are _________________________:
Fill in the blank(s) with the appropriate word(s).