What do manufacturers sometimes add to stored-pressure water extinguishers in order to increase their effectiveness?

If foreign objects that can damage fibers are found in a rope during inspection, the rope:

Synthetic fiber rope:

A portable fire extinguisher must be labeled with the:

On which type of fires are stored-pressure water mist extinguishers safe and effective to use?

Epithelial cells serve as a frontline defense in innate immunity by forming physical barriers and producing soluble mediators that influence immune responses. (A)  Propose one strategy to enhance epithelial cell-mediated innate immunity against a respiratory bacterial infection. Justify your approach based on known epithelial innate immune functions. (3 points) (B)  Design an experiment, assuming unlimited resources, to test the efficacy of your strategy from Part A. Briefly describe your methodology, controls, and expected results. (5 points)

Which is the most obvious sign of fire cause?

A bump test is performed to:

An advantage of using thermal imagers during search and rescue operations is:

In which situation would firefighters likely use an air monitoring device?