In the CAC-A process, molten metal is blown away from the cut by a jet of _____.
a. fuel gas
b. oxygen
c. carbon dioxide
d. compressed air
Answer: D
You might also like to view...
In the United States, most structural lumber is grown in the
A) northern region of the United States. B) central region of the United States. C) western and southern regions of the United States. D) eastern and northeastern regions of the United States. E) none of the above, because most structural lumber is imported from Mexico.
What is the approximate circumference of a circle that has a radius of 381 millimeters?
a. 299mm b. 598mm c. 900mm d. 1197mm e. 2394mm
An NPN transistor will be open from emitter to collector when
A) the base is more positive than the emitter. B) the base is more negative than the emitter. C) the emitter is more positive than the collector. D) the collector is more positive than the emitter.
Which combustion control closes as soon as the firing cycle is complete and is meant to minimize the loss of residual heat up a chimney?
a. automatic vent damper b. larger burner c. electrical pilot igniter d. none of the above