Standard water heaters typically have integrated insulation with an R-value of between ____, while very efficient heaters may have R-values as high as 24.

A. 6 and 12
B. 8 and 16
C. 9 and 18
D. 12 and 20


Answer: B

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The development of the _____ had a revolutionary? effect on agriculture

A) internal combustion engine? B) cotton gin? C) reaper? D) combine

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Determine the space mean speed for the data given in Problem 6-3 using Equation 6.5. Compare your answer with that obtained in Problem 6-3 for the space mean speed and discuss the results.

What will be an ideal response?

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Which part of the body must be removed when an animal is slaughtered?

a. Feet c. Hide b. Entrails d. All answers

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Why might women be more prone to suffering from iron-deficient anemia than men?

A) Women require about 50% more heme units per hemoglobin. B) Hemoglobin molecules break down more readily in women. C) Women have approximately half as many iron reserves. D) The RBCs in women have a shorter lifespan. E) Women absorb less iron from their diet.

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