Recent data suggests that ____ are among the most hazardous vehicles on the road, both in terms of vehicle and per mile traveled.

Which of the following statements about medical air supplies are false?

1. The air intake port must be located indoors. 2. The source of medical air must be from the outside atmosphere. 3. Most hospital bulk air supply systems use two compressors. 4. Backflow through the compressors that are cycled off must be prevented manually. a. 1 and 4 c. 2 and 3 b. 1, 2, and 3 d. 3 and 4

Which of the following vaccines in infants has resulted in a dramatic reduction in the incidence of epiglottitis?

A) pneumococcal vaccine B) influenza type A or B vaccine C) varicella vaccine D) Haemophilus influenzae type B vaccine