Which of the following types of portable fire extinguishers is found in industrial operations such as paint spraying or solvent manufacturing facilities?
A. Stored-pressure extinguisher
B. Pump-operated extingusiher
C. Combination-pressure extinguisher
D. Cartridge-operated extinguisher
Answer: D. Cartridge-operated extinguisher
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Which of the following drug classifications blocks the efflux of potassium ions during repolarization phases 1–3, prolonging the refractory period and decreasing the frequency of arrhythmias?
A) Class I antiarrhythmic agents B) Class II antiarrhythmic agents C) Class III antiarrhythmic agents D) Class IV antiarrhythmic agents
Heat loss involving the transfer of heat to an object without physical contact is known as:
A. convection. C. radiation. B. conduction. D. evaporation.
The removal of a clot from a blood vessel is known as a/an:
A) valve repair. B) bypass. C) embolectomy. D) endarterectomy.
The abbreviation NEC represents a code
A. that is used when a disease or condition cannot be found in any other category. B. that is used for unspecified reasons. C. that has a manifestation code also. D. that is used when no other information is available.