题目

33. (3.0分) 下列等式正确的是 ( )。A. C_(ar)=(100-M_(ad))/(100)C_(d)B. C_(ar)=(100-M_(ar))/(100)C_(d)C. C_(ar)=(100)/(100-M_(ad))C_(d)D. C_(ar)=(100)/(100-M_(ar))C_(d)

33. (3.0分) 下列等式正确的是 ( )。

A. $C_{ar}=\frac{100-M_{ad}}{100}C_{d}$

B. $C_{ar}=\frac{100-M_{ar}}{100}C_{d}$

C. $C_{ar}=\frac{100}{100-M_{ad}}C_{d}$

D. $C_{ar}=\frac{100}{100-M_{ar}}C_{d}$

题目解答

答案

A. $C_{ar}=\frac{100-M_{ad}}{100}C_{d}$