The equation (t=sqrt P (frac{1⋅75}{CBR}-frac{1}{pπ})^{1⁄2}) is valid only when the value of CBR is ______
A. More than 15%
B. Less than 15%
C. More than 12%
D. Less than 12%
Answer:D
The equation (t=sqrt P (frac{1⋅75}{CBR}-frac{1}{pπ})^{1⁄2}) is valid only when the value of CBR is ______
A. More than 15% B. Less than 15% C. More than 12% D. Less than 12%