Which of the following is not an example of third-class mail?
Booklets
Periodicals
Photographs
DVDs
Periodicals
Rationale: Periodicals are considered second-class mail.
Health Professions
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In contrast to inhalation, exhalation:
A. requires muscular effort to effectively expel air from the lungs. B. is a passive process caused by increased intrathoracic pressure. C. occurs when the diaphragm lowers and expels air from the lungs. D. is an active process caused by decreased intrathoracic pressure.
Health Professions
The antithyroid drug that is 10 times as potent as propylthiouracil is:
A. glucagon B. parathyroid hormone C. lithium D. methimazole
Health Professions