Which of the following equipment can be protected with surface barriers?

What is the term for a large fire involving multiple structures?

a . running fire b. campaign fire c. enfilade d. conflagration

The central ray angulation used for AP axial sacroiliac joints projections

a. produces an image without sacroiliac joint foreshortening. b. ranges from 25 to 30 degrees cephalically. c. needs to be greater in male than in female patients. d. needs to be decreased as the lumbosacral curvature increases.