Which statement about radiographic grids is incorrect?
a. Grids may have grid strips running in perpendicular directions.
b. A grid is a series of lead strips that alternate with radiopaque interspace strips.
c. The radiopaque strips are typically made of thin lead.
d. The interspace strips are usually made of aluminum.
b. A grid is a series of lead strips that alternate with radiopaque interspace strips.
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Which of the following BEST describes the factors respiratory equipment must be protected from during storage?
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In 1988 the ____ required facilities storing or using hazardous chemicals to comply with the Hazard Communication Standard.
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