Which of the follwoing are components of the chemical buffer system?
I. Carbonic-acid buffer system
II. Phosphate buffer system
III. Protein buffer system
a. I, II, and III c. I and III only
b. I and II only d. I only
a. I, II, and III
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Total-flooding carbon dioxide fire extinguishing systems deliver at least 34-percent concentration of CO2
A. True B. False
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Which of the following best describes the changes seen in an infant's chest wall mechanics?
a. The healthy newborn has a very rigid chest wall. b. The ribs are completely ossified at birth. c. The infant's ribs are elliptical in shape. d. The chest wall is very compliant but not very stable.
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