0.02g以下～0.02g丸剂重量差异限度
A．不溶性微粒B．酸值与皂化值C．溶出度检查D．融变时限检查E．溶化性检查
参考答案：D
电枢移动式起动机不工作时，电枢在（）的作用下与（）错开一定的位置。
It was over a decade _______ they paid off all their debt. You can imagine what a hard life they had. [ ]
A. until
B. before
C. after
D. while
