A relative refractory period occurs when a nerve fiber can only be restimulated by a much stronger stimulus than the initial stimulus

What is a vesicant?

a. A material that acts as a neurotoxicant b. Highly volatile liquids that cause seizures, respiratory failure, and cardiac arrest by interfering with the blood's ability to absorb atmospheric oxygen c. Substances that blister skin and damage the eyes, mucous membranes, and respiratory tract upon exposure d. Liquid compounds that cause pulmonary edema and damage the respiratory tract when their vapors are inhaled

What do "as-built diagrams" show a fire inspector?

A) How the final installation was actually completed B) Where the utilities are located in the street C) The topography of the area D) The compliance with local codes