Technician A says that a rough idle on a fuel-injected engine can ...

[EY67]

Technician A says that a rough idle on a fuel-injected engine can be caused by dirty throttle plates.
  Technician B says that the wrong PCV valve could cause the engine to idle roughly. Which technician is correct?
 
  A) Technician A only B) Technician B only C) Both technicians D) Neither technician

Question 2

Technician A says that impact sockets have thicker walls than conventional sockets. Technician B says that impact sockets have a black oxide finish. Which technician is correct?
 
  A) Technician A only B) Technician B only
  C) Both technicians A and B D) Neither technician A nor B

[mirabriestensky]

Answer to Question 1

C

Answer to Question 2

C

[EY67]

Thanks for the timely response, appreciate it

[6ana001]

Great answer, keep it coming