With current, state-of-the-art portable units,
a. kVp is used to compensate for insufficient mAs.
b. it is safe to stand behind the unit for protection.
c. the batteries provide power for exposures and travel.
d. higher ratio grids are necessary.
c. the batteries provide power for exposures and travel.
Health Professions
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The heat of combustion for wood is approximately ___________ Btu/lb. (_______ kJ/g)
a. 8000, 18.6 b. 12000, 27.9 c. 20000, 46.5 d. Wood does not have a heat of combustion.
Health Professions
The National Asthma Education and Prevention Program guidelines advocate the use of oral cor-ticosteroids for which of the following?
a. Acute asthma exacerbations b. Maintenance of severe persistent asthma c. Maintenance of moderate to severe per-sistent asthma d. Maintenance of mild to moderate persis-tent asthma
Health Professions