The middle ear serves an impedance-matching function by
A) amplifying the force per unit area.
B) reducing the area over which the existing force is exerted.
C) a & b
D) neither of the above.
B
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Any laboratory that wishes to perform ________ testing must have a Certificate of Provider-Performed Microscopy.
A. Level I B. Level II C. Certificate of Waiver D. Level III
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Which of the following would you not recommend to reduce the risk of SIDS?
A. Do not drink, smoke, or take drugs when pregnant B. Use a firm crib mattress and keep toys, pillows, and bumper pads out of the crib C. Put the infant to sleep on his stomach D. Breast-feed whenever possible E. Do not let the baby sleep in an adult bed
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