Crushed coal from 1.6 mm to 6 mm is injected into the bed by means of an ________.
A ) elevator
B ) air-stream
C ) injector
D ) pulverizer
Answer: B
Crushed coal from 1.6 mm to 6 mm is injected into the bed by means of an ________.
A ) elevator
B ) air-stream
C ) injector
D ) pulverizer
Answer: B