_______________ of Purple-K creates an opaque, gaseous cloud in the combustion zone

A check valve is used to prevent _______ for safety reasons and to ensure that the water flows in the system in only one direction

a. backflow b. pressure relief c. accidental discharge d. low pressure

Bleeding in the brain in a very low birth weight premature babies, which usually resolves within a few days is known as:

A) intracranial bleeding. B) intraventricular hemorrhage. C) epidural hemorrhage. D) subdural hemorrhage.