The principle way dry chemical agent extinguishes fire is through the interruption of ______________
a. pyrolysis
b. heat of vaporization
c. decomposition of extinguishing agent
d. chemical chain-breaking reactions
d
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Gravity exerts a force on a building through the ___ of the building and all of its contents
A) volume B) density C) weight D) dimensions
What would the ratio of compressions to breaths be for this patient?
A 52-year-old male presents with a positive medical history. He reports on his medical history that he is taking medication for a heart condition and hypertension. As the dental auxiliary prepares for the procedure, the patient begins to complain of chest pains and loses consciousness. The dental auxiliary notifies the dentist and the receptionist and begins chest compressions. Once the dentist enters the operatory, she places a hard backboard under the patient and prepares the AED. The receptionist notifies the EMS system and retrieves the emergency kit.
Which of the following is a bacterium?
a. Herpes simplex c. Pseudomonas aeru-ginosa b. Pneumocystis ca-rinii d. Candida albicans
A patient is generally considered to have orthostatic vital signs when:
A) the systolic BP increases and the diastolic BP decreases when going from a lying to a sitting position. B) the heart rate increases by 20 beats/min or more when going from a supine to a standing position. C) the respiratory rate becomes fast and the depth becomes shallow when he or she suddenly stands up. D) he or she experiences chest pain and a rapid, irregular heart rate when going from a seated to a standing position.