When measuring heat, which is quantifiable and can be measured, what system is used by the fire service in the United States?

Which of the following devices require testing by highly trained individuals because of their complexity?

A. Smoke detectors B. Pneumatic detectors C. Restorable heat detection devices D. Flame and gas detection devices

Phobic disorder is an unusual fear or ________ concerning a specific object, situation, or activity

Fill in the blank(s) with correct word