A water pump can fail to provide the proper amount of coolant ...

[deesands]

A water pump can fail to provide the proper amount of coolant flow through the cooling system if what has happened?
 
  A) The bearing is noisy
  B) The impeller blades are worn or slipping on the shaft
  C) The coolant is leaking from the weep hole
  D) A bearing failure has caused the shaft to become loose

Question 2

A conventional zirconia oxygen sensor can be made with what designs?
 
  A) Cup and thimble B) Finger and thimble
  C) Dual cell and single cell D) Cup and planar

[chinwesucks]

Answer to Question 1

B

Answer to Question 2

D