Title: United States Air Force.
Question: Was does ROPMA stand for in the USAF? 

Title: Age of Enlightenment.
Question: Which philosopher argued that without belief in a God who punishes evil, the moral order of society was undermined?

Title: Gramophone record.
Question: Who developed the 33 1/3 rpm LP?

Title: Gramophone record.
Question:
What material is used in order to release the vinyl records from their molds?