Which of the following is NOT one of the most commonly used fuel in internal combustion engines:
a) Gasoline
b) Light Oil Fuels
c) Natural Gas
d) Propane
e) Heavy Oil Fuels
Answer: d
Which of the following is NOT one of the most commonly used fuel in internal combustion engines:
a) Gasoline
b) Light Oil Fuels
c) Natural Gas
d) Propane
e) Heavy Oil Fuels
Answer: d