The maximum airborne concentration to which an average healthy person may be exposed 8 hours a day, 4o hours a week, without adverse health effects, best defines:

Because infants and small children rely more heavily on the diaphragm for breathing, respiratory distress can be detected by observing which one of the following signs that is not prominent in adults?

A) Movement of the abdomen with respiratory effort B) Bulging of the intercostal spaces C) Use of the sternocleidomastoid muscles of the neck D) None of the above

What is the minimum overlap between coat and trousers when the wearer is bent over to a 90 degree angle?

A. 2 inches (50 mm) B. 3 inches (76 mm) C. 5 inches (127 mm) D. 6 inches (152 mm)