A cubic yard of concrete contains how many cubic feet?

a. 3
b. 9
c. 18
d. 27


Answer: D

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A(n) ________ is the time and distance between two consecutive points, either high or low

A) Wavelength B) Period C) Frequency D) Amplitude

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A triangular-shaped piece of metal covers the end support for a PV panel.  The? right triangle is 135 cm long and 216 cm high.  What is the area of the piece?

Fill in the blank(s) with the appropriate word(s).

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Describe stratification.

What will be an ideal response?

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Opening a drain or blowdown valve on an operating boiler can result in _____.

a. boiler damage b. flash steam c. a rise in boiler operating pressure d. valve failure

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