1 2 3 1 _ _ _ 2 _ _ _ 3 _ _ _ ACROSS 1) a polymer of vinyl chloride used instead of rubber in electric cables 2) an agency in the department of transportation that is responsible for the safety of civilian aviation 3) a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen DOWN 1) a powerful greenhouse gas emitted during the production of aluminum 2) a unit of electrical power in an ac circuit equal to the power dissipated when 1 volt produces a current of 1 ampere 3) feline mammal usually having thick soft fur and no ability to roar: domestic ___s; wild___s ** Scroll down for solution. ** Are you sure you want to peek? pvc faa crt