题目提净芒硝时,每100kg朴硝用萝卜A. 5kgB. 10kgC. 15kgD. 20kg提净芒硝时,每100kg朴硝用萝卜A. 5kgB. 10kgC. 15kgD. 20kg题目解答答案D. 20kg