Homeowners can cut utility bills by ____% or more by following energy audit recommendations.
A. 15
B. 20
C. 25
D. 30
Answer: A
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The vertical distance between contour lines is known as ____.
A. distance interval B. contour interval C. strata interval D. contour index
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____ materials are synthetic compounds that are sprayed onto a surface and that then produce an insulating foam by a chemical reaction.
A. Foamed-unset B. Foamed-in-place C. Poly-foamed D. Refoamed
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The total global soil lost through erosion is generally greater from gully erosion than from sheet erosion
Indicate whether the statement is true or false
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When current is applied to the coil of an NC relay,
A) it opens. B) it closes. C) its contacts touch. D) it opens and its contacts touch.
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