Ball valves on the end of refrigeration hoses: A) ...

[rl]

Ball valves on the end of refrigeration hoses:
 
  A) Automatically open and close when the hoses are connected and disconnected.
  B) Only work when connected to a unit with ball valves.
  C) Are controlled manually by the technician.
  D) Are electronically controlled by a digital gauge set.

Question 2

Check valves on the end of refrigeration hoses:
 
  A) Are electronically controlled by a digital gauge set.
  B) Only work when connected to a unit with Schrader valves.
  C) Are controlled manually by the technician.
  D) Automatically open and close when the hoses are connected and disconnected.

[pallen55]

Answer to Question 1

C

Answer to Question 2

D