Trenches ____ feet or deeper must be shored or sloped back to the angle of repose.
A. 4
B. 6
C. 8
D. 10
Answer: A
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According to Article 314, where are boxes permitted to be installed?
What will be an ideal response?
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Explain why wood is a good example of the efficient use of a renewable material.
What will be an ideal response?
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It is necessary to use flux when brazing one copper component to another.
Answer the following statement true (T) or false (F)
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Plants cool the air through ____.
A. evapotranspiration B. evaporation C. transpiration D. respiration
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