Which of the following is the primary purpose of a screen saver on a computer?
To allow for automatic rebooting
To conserve electricity
To prevent unexpected shutdown
To reduce wear on the screen
To reduce wear on the screen
Rationale: The primary purpose of a screen saver on a computer is to reduce wear on the screen. It either "blanks" the screen or fills it with moving images or patterns when the computer is not in use.
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An effective records destruction policy should do all of the following EXCEPT
a. outline the length of time records will be kept. b. define which records will be kept onsite and which will be kept offsite. c. designate five people to be responsible for deciding what to keep and what to purge. d. provide a method of disposal that destroys all information in the record.
With the ___________________ method, the Paramedic would refer to Lead I and Lead II only.
Fill in the blank(s) with the appropriate word(s).
What percent of the kinetic energy inside the x-ray tube is actually converted to x-radiation?
a. 99 percent b. 50 percent c. 25 percent d. 1 percent
Many contrast media contain ____.
A. calcium B. iodine C. petroleum D. lead E. hydrogen peroxide