Positive-pressure ventilation (PPV) exhaust openings vary with the size of the entry opening and the:
A. capacity of hose lines.
B. capacity of the blower used.
C. number of personnel on site.
D. number of compartments in the structure.
B
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With regard to the endocrine system, which of the following statements is NOT true?
A) The pituitary gland is often called the "master gland." B) The posterior pituitary hormones are actually synthesized in the hypothalamus. C) The hypothalamus and pituitary glands have no physical link. D) The hypothalamus controls many of the functions of the pituitary gland.
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The cells that are believed to mediate the destructive basal cell changes seen microscopically in lichen planus are:
a. Plasma cells b. T lymphocytes c. B lymphocytes d. Langerhans cells e. Keratinocytes
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