Where was the first fire insurance company formed in America?

________________________ are the sensing devices most often used to measure skin dose directly.

a. Thermoluminescent dosimeters b. A sequence of aluminum equivalent filters of varying thicknesses c. Lead-impregnated filters d. Molybdenum and rhodium filters

Which of the following general statements regarding infectious diseases is correct?

A. All contagious diseases are infectious. B. All infectious diseases are contagious. C. Pneumonia is a contagious disease process. D. Hepatitis B is infectious, but not contagious.