What does a P50 of 30 indicate?
A. a leftward shift of the curve meaning a decreased affinity of hemoglobin for O2
B. a rightward shift of the curve meaning a decreased affinity of hemoglobin for O2
C. a leftward shift of the curve meaning an increased affinity of hemoglobin for O2
D. a rightward shift of the curve meaning an increased affinity of hemoglobin for O2
Answer: B
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The common adult dosage of finasteride is:
A) 0.5 mg once daily. B) 5 mg once daily. C) 0.4–0.8 mg once daily. D) 10 mg once daily.
Which of the following statements about smoke control is MOST accurate?
A. Most smoke management systems are ineffective if building occupants are sleeping or impaired. B. The purpose of smoke control is to quickly remove smoke from and introduce fresh air into the fire area. C. Smoke management systems are not activated until the structure has been evacuated and searched. D. Smoke control is any effort to change pressure in spaces adjacent to the fire area to compartmentalize or exhaust smoke.
Many newer fire apparatus are equipped with gated, preconnected front suctions for making _____________
a. forward lays of large diameter hose b. direct hydrant connections c. water supply relays d. reverse lay of large diameter hose
Which of the following types of proportioners consists of two positive-displacement rotary-gear pumps that are mounted on a common shaft with one pump for water and the other for foam concentrate?
A. Balanced pressure proportioner B. Pressure proportioning tank system C. Around-the-pump proportioner D. Coupled water motor-pump proportioner