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

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Fill in the blank(s) with the appropriate word(s).

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The equipment with pacemakers that relays the electrical impulse to the myocardium is the:

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a. True b. False Indicate whether the statement is true or false

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