Anything that can carry infectious disease and for which each health-care worker must take precautions to prevent exposure is:

Which of the following diagnostic tools serves to confirm the diagnosis of congenital heart dis-ease?

a. Sweat test b. Fluoroscopy c. Chest radiography d. Ultrasound

Which piece of equipment is designed for mixing and melting substances?

A) beaker B) graduate C) mortar D) auto-pipette