The FIRST line of defense against disease is the ________

After you administer a medication through a metered-dose inhaler (MDI), it is important that the patient:

A) immediately inhale deeply. B) pant for 10 seconds. C) exhale as forcefully as possible. D) hold her breath for several seconds.

When should fire hydrants be inspected?

A. Once a year B. Twice a year C. Once a month D. Once every six months