题目内容:
Reduce 50g to No. 180 powder and determine the loss on drying by drying 2g to constant weight at 100℃ to 105℃。在上述药品的干燥失重实验中,将多少克的待测样品干燥至恒重( )。
A.50g B.180g
C.2g
D.100g
E.105g
参考答案:
答案解析: