____ the victim's responsiveness

All foam systems, regardless of size, consist of a foam concentrate supply, proportioning device, ______________, and foam discharge applicators

a. in-line proportioners b. fire department hose c. bladder tanks d. water supply

In normal blood gas ranges, arterial oxygen saturation should be at or near what percentage range of capacity?

a. 10% to 20% b. 25% to 40% c. 50% to 79% d. 96% to100%