_______ rating is based on the risk factor of the individual groups.

Nonirritant gases are considered to be

a. carbon monoxide b. hydrogen cyanide c. hydrogen sulfide d. phosgene e. all of the above

An exposure incident is considered

when eye, mouth, or other mucous membrane or nonintact skin comes into contact with blood or saliva. when the patient comes into contact with a contaminant at the office. something that usually does not happen with proper training. when there is a procedure that presents a potential for exposure.