Because of the OSL dosimeter's sensitivity down to as low as 10 µSv for x-ray and gamma ray photons in the energy range 5 keV to 40 MeV, it is an excellent and practical monitoring device for
a. employees working in high-radiation environments and for non-pregnant workers.
b. employees working in low-radiation environments and for pregnant workers.
c. members of the general public not occupationally employed.
d. Pregnant employees working in high-radiation environments.
b. employees working in low-radiation environments and for pregnant workers.
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In the brain and spinal cord, the myelin sheath is formed by the:
a. Oligodendroglial cells b. Schwann cells c. Neurons d. Astrocytes
All the parameters with a first-degree block are within normal limits EXCEPT:
A. heart rate. B. rhythm. C. PR interval. D. QRS interval.
Which of the following is true regarding vitamins?
a. Vitamins are needed in large quantities. b. Vitamins A, B, D, and E are fat soluble. c. Vitamins B and C are water soluble. d. Water-soluble vitamins are stored in fatty tissues. e. Vitamins are simple molecules.
The dental laser is a medical device that generates a precise beam of concentrated light energy. There is training for the dental assistants when the laser is used
a. True b. False Indicate whether the statement is true or false