With additional pressure and time, subbituminous coal transforms into ____ coal
A) anthracite
B) subbituminous
C) lignite
D) bituminous
D
Trades & Technology
You might also like to view...
The Confederacy's most effective commerce-raider was the
A. Monitor. B. Merrimack. C. Trent. D. Virginia. E. Alabama.
Trades & Technology
Each milk producing center, described as a microscopic spherical structure, with
epithelial cells comprising its wall, and a hollow center (lumen), is termed the: A. follicle B. medulla C. alveolus
Trades & Technology
Automatic control is a system where a process variable is forced to remain at a desired value called the controller output point
Indicate whether the statement is true or false
Trades & Technology
What can be used to maintain the head pressure of a system with a water-cooled condenser?
A. fan cycling B. dampers or louvers C. water regulating valve D. all of the above
Trades & Technology