A cubic yard of concrete will contain approximately _____ lb of gravel or crushed stone.

A. 500
B. 1800
C. 1500
D. 750


Answer: B

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Use the accompanying figure. If H = 1.100 in, L = 2.100 in, and W = 2.000 in, what is the measure of angle CBA? Give your answer to the nearest hundredth of a degree.

A. 14.55 in B. 20.77 in C. 26.99 in D. 32.22 in

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With both fists in front of the body, pointing the thumbs outward tell the crane operator to ____ the boom.

A. retract B. rotate C. extend D. lower

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What have been hindrances for the adoption of more fuel cell–powered vehicles?

What will be an ideal response?

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The unit of measurement for current flow is the ____.

A. volt B. ohm C. coulomb D. ampere

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