All of these are main jobs of the air cleaner and filter parts, ...

[xroflmao]

All of these are main jobs of the air cleaner and filter parts, EXCEPT ________.
 
  A) Clean the air before it is mixed with fuel B) Lower the intake air temperature
  C) Act as a flame arrester in case of a backfire D) Silence the intake air noise

Question 2

Technician A says that a cracked exhaust manifold can affect engine operation. Technician B says that a leaking lower intake manifold gasket could cause a vacuum leak. Which technician is correct?
 
  A) Technician A B) Technician B
  C) Both Technicians D) Neither Technician

[tjayeee]

Answer to Question 1

B

Answer to Question 2

C

[xroflmao]

Thank you

[tjayeee]

No problem