____ are similar to drives and walks in that they are flat areas of paving with easy-to-follow dimensions.
A. Planters
B. Patios
C. Paths
D. Retainers
Answer: B
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Hay______ diseños de motor designados por NEMA.
a. 3 b. 4 c. 5 d. 7
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What is the smallest particle of a compound that can exist in a free state and take part in a chemical reaction known as?
A. element B. atom C. proton D. molecule
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The type of fuel cell that will undoubtedly be used first in an automobile is the:
A. Proton exchange membrane fuel cell B. Solid oxide fuel cell C. Molten carbonate fuel cell D. Alkaline fuel cell
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Given the chemical equation: H3PO4 (18 tons) + 3NaOH (10 tons) ----»Na3PO4 + 3H2O (products total 28 tons) Change H3PO4 to 4900 tons. What does the (3NaOH) weight need to be in order to balance the equation?
a. 2722 tons b. 272.22 tons c. 1600 tons d. 3200.32 tons
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