Question 8 osy and post indicator valves are usually

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Question 8 - OS&Y and Post Indicator valves are usually kept ____.
Question 9 - A(n) ____ sprinkler is designed to be used in a hanging down position.
Question 10 - The ____ sprinkler system has all of the heads open all of the time.
Question 11 - ____ is used to create a foam solution from foam concentrate and water by using the venturi principle.
FSE 221 FINAL Question 12 - Dry sand is used on ____ fires.
Question 13 - ____ is/are the most common fire-extinguishing agent(s) in use today.
Question 14 - The ____ smoke detector contains a small amount of radioactive material to detect smoke.
Question 15 - ____ have characteristics of halogenated agents, but do not harm the ozone layer.
Question 16 - In a preaction system the sprinkler heads are ____.

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