6-24. Live rounds or expended cases are removed from the conveyer elements and placed in the entrance cover retainer partitions by what component? 1. The exit unit 2. The scoop disk 3. The bypass unit 4. The entrance unit 6-25. A   transfer   unit   is   attached   to   an   M61A1 automatic gun housing by what means? 1. Bolts 2. Safety wires 3. Quick-release pins 4. Quick-disconnect fittings 6-26. An adapter assembly is bolted directly to what component? 1. The gun housing 2. The rear buffer 3. The forward buffer 4. The transfer unit 6-27. The conveyer elements pass along a path from the entrance unit to the exit unit.   What chute provides this path? 1. The feed chute 2. The bypass chute 3. The return chute 4. The unload chute 6-28. The   conveyer   transports   expended   cases   or unfired  rounds  along  a  path  from  the  transfer unit to the entrance unit.  What chute provides this path? 1. The return chute 2. The unload chute 3. The bypass chute 4. The feed chute 6-29. The conveyer transports live rounds or expended cases along a path from the exit unit to the adapter assembly.   What chute provides this path? 1. The feed chute 2. The return chute 3. The unload chute 4. The bypass chute 6-30. Conveyer elements are joined together by what type of fasteners? 1. Nuts and bolts 2. Sheet metal screws 3. Quick-release pins 4. Removable hinge pins? 6-31. The  mechanical  drive  unit  in  an  F-14  aircraft has what total number of output shafts? 1. Five 2. Two 3. Three 4. Four 6-32. The mechanical drive unit in an F/A-18 aircraft has what total number of output shafts? 1. One 2. Two 3. Three 4. Four 6-33. A gun gas purge system is used for what pur- pose? 1. To provide gas to operate the gun 2. To cool the gun barrels only 3. To  purge  gas  from  the  gun  compartment only 4. To cool the gun barrels and purge gas from the gun compartment 6-34. The  air  required  to  operate  the  gun  gas  purge system  in  an  F/A-18  aircraft  is  provided  by what air source? 1. The engine bleed air only 2. The ram air scavenge door only 3. The   engine   bleed   air   and   the   ram   air scavenge door 4. The environmental cooling system 6-35. In  an  F/A-18  aircraft,  the  M61A1  automatic gun system can be operated in what computer mode? 1. A/A only 2. A/G only 3. CCIP only 4. A/A, A/G, or CCIP 29