Slope of counter-current flow rotary drier is in the range of ____________ meter/metre?
A. 0 to 0.08
B. 0 to 0.8
C. 0 to 1.5
D. 0 to 2.2
A. 0 to 0.08
B. 0 to 0.8
C. 0 to 1.5
D. 0 to 2.2