Melting is a physical change of a substance:
A) from solid to liquid.
B) from liquid to gas.
C) from solid directly to gas.
D) directly from a gas to a solid.
A
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Which of the following statements best describes a propellant?
a. A mixture of an oxidizer and some other arbitrary substance that readily burns. b. An oxidation-reduction reaction between the components of black-powder when its initiated by a heat from primer. c. A material such as smokeless powder that defragrates and produces a relatively large volume of gases and vapors. d. A component of the round that explodes from the mechanism shock it experiences when it hits a target.
The QRS complex reflects:
A) atrial depolarization. B) ventricular depolarization. C) ventricular repolarization. D) atrial repolarization.
Your patient is a 25-year-old man who has a reddened area with blisters across the palm of his hand after grabbing the handle of a very hot iron skillet. Which of the following actions must be avoided in the prehospital management of this wound?
a. Applying a dry, sterile dressing b. Cooling the burn with cool water c. Applying an antibiotic ointment d. Elevating the wound above the level of the heart
Most medications in the HCPCS Level II book are coded by:
A. the type of drug given. B. quantity administered to the patient. C. whether it is a new or established drug. D. method of administration.