# The purpose of the pin-indexing system for compressed gas cylinders is to: select one: a. you determine what type of oxygen

###### Question:

The purpose of the pin-indexing system for compressed gas cylinders is to: select one: a. you determine what type of oxygen regulator to use. b. ensure that the correct regulator is used for the cylinder. c. prevent destroying or stripping the threads on the cylinder. d. reduce the cylinder pressure to a safe and more useful range.

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