Steel is used for reinforcement because it _____
a. will not corrode
b. has nearly the same temperature expansion and contraction rate as concrete
c. has a lower temperature expansion and contraction rate than concrete
d. is inexpensive
b
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Chemicals inhaled are absorbed through the ______
A) liver B) heart C) kidneys D) lungs
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Gears are rugged and durable and can transmit power with up to _____ efficiency with long service life.
A. 80% B. 90% C. 98% D. 100% E. none of the above
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Trees give off carbon dioxide as a byproduct of photosynthesis
Indicate whether the statement is true or false
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Find the diameter of a piston with an area of 57.02 square inches. Express the answer to the nearest hundredth inch.
A. 8.52 B. 8.78 C. 9.01 D. 9.36
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