The only type of soil that can be excavated with 90-degree walls without protection is _____.

a. Type A
b. stable rock
c. Type C
d. Type B


b. stable rock

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What nominal system voltage is used in residential?

A) 277/480 B) 120/240 C) 120/208

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Component (1) has a molar volume of 90 m3/mol; component (2) has a molar volume of 110 m3/mol. When you add 25 moles of component (1) to 75 moles of component (2), what is the best estimate of the total molar volume if you assume an ideal solution?

A. 95 m3/mol B. 110 m3/mol C. 90 m3/mol D. 100 m3/mol E. 105 m3/mol

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Social obligation is the highest degree of social responsibility an organization can exhibit

Indicate whether the statement is true or false.

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The sum of the three angles of a triangle is always _____

a. 90 degrees b. 180 degrees c. 270 degrees d. 360 degrees

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