Question

technician a states that pinging can be referred to as the sound of marbles being shaken in a glass jar. technician b states that pinging can be referred to as the sound of water gushing in a pipe. who is correct? a. technician a b. technician b c. both technician a and technician b d. neither technician a nor technician b

Explanation:

Engine knocking (pinging) is a metallic, rapid - fire "marble - like" sound. Water gushing in a pipe is not the sound associated with pinging.

Answer:

a. Technician A