The estimator?s most useful reference is _____

a. historical records
b. architectural drawings
c. previous contractual data of subcontractors
d. specific cost of equipment records


a

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La cantidad de gajos de una cabeza está determinada por ____.

a. un cuadro b. la división del diámetro por el ancho del gajo que con mayor facilidad se instale c. la multiplicación del diámetro por pi d. la división de la circunferencia por el ancho del gajo que con mayor facilidad se instale

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According to the National Electrical Code®, Communications cables can be run in the same raceway or enclosure as _________ conductors.

A. Electric light and power B. Class 1 C. Class 3 only D. Class 2 and Class 3

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Grafting is used primarily on trees

Indicate whether the statement is true or false

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____ are made in holes in a piece of metal that is lapped over another piece of metal.

A. Field welds B. U groove welds C. Plug welds D. Flush contour welds E. none of the above

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