Which is the most efficient method of separating the highest fractions found in crude petroleum?
A. distillation
B. vaporization
C. thermal cracking
D. catalytic cracking
Answer: D
You might also like to view...
Silicon is widely used as a semiconductor because it _____.
a. has no valence electrons b. has only one valence electron c. has a negative charge d. withstands heat
Northern soldiers became increasingly convinced of slavery's evils when
A. Congress passed the Thirteenth Amendment to the Constitution. B. abolitionists praised Lincoln's Emancipation Proclamation. C. slaves ran away to Union camps and persevered against all odds. D. Confederate politicians stopped defending the legitimacy of slavery. E. All of these choices are correct.
ECM motor speed is controlled by:
A) Which speed winding is connected. B) Pulses of DC power sent by the control module to the windings. C) The voltage applied to the motor. D) The frequency and the number of poles.
Describe plus-minus dimensioning using a bilateral tolerance format and give an example of equal and unequal bilateral tolerances.
What will be an ideal response?