Some stem nuts may need to be replaced because ________. A) ...

[berenicecastro]

Some stem nuts may need to be replaced because ________.
 
  A) vibration has caused them to fall out
  B) the threads have been stripped from wear and tear
  C) of the hammer effect of lost motion
  D) rust and corrosion have destroyed them

Question 2

How often should live circuits be worked on?
 
  A) When somewhat necessary B) When the power goes out
  C) Whenever deemed necessary D) Only when absolutely necessary

[janeli]

Answer to Question 1

C

Answer to Question 2

D

[berenicecastro]

Excellent

[FergA]

Gracias!