In plasma arc cutting, plasma is created by _____.
a. combining acetylene with acetone
b. exposing cutting gas to radioactive material
c. passing fuel gases through a large orifice inside the torch
d. superheating gas in an electric arc
Question 2
The most common use of insulating concrete forms is in _____.
a. low commercial structures
b. multistory industrial buildings
c. high-rise office buildings
d. apartment complexes