Which of the following are components of a typical O2 blender? 1. Precision metering device or mixture control 2. Audible dual low-pressure alarm system 3. Pressure regulating and equalizing valves 4. Variable-size air-entrainment port
a. 2 and 4 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 1, 3, and 4 only
ANS: B
Health Professions
You might also like to view...
When a cataract occurs, the film grows:
A) On the eye. B) Around the eye. C) Within the eye. D) Beneath the eye.
Health Professions
____________________ (i.e., soft spots) are the openings between the skull's bones in the suture line.
Fill in the blank(s) with the appropriate word(s).
Health Professions
The equipment with pacemakers that relays the electrical impulse to the myocardium is the:
A. pacer spike. B. generator. C. lead wires. D. QRS interval.
Health Professions
Every dental office should have an up-to-date emergency kit. If this kit contains controlled substances, it must be kept locked up
a. True b. False Indicate whether the statement is true or false
Health Professions