Which of the following substances is found in most cigarettes?
A) nicotine
B) carbon monoxide
C) tar
D) All of these answers are correct.
D
Health Professions
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Concrete adheres to reinforcing bars when it has hardened because of:
A) chemicals added to the concrete. B) the coating applied to the rebar. C) deformations on the surface of the rebar. D) mechanical vibrators packing concrete entirely around the rebar.
Health Professions
Maintenance of dry-chemical fire-extinguishing components is the responsibility of the inspector
A. True B. False
Health Professions