主药中含有挥发油较多时应加入的辅料是()
A.稀释剂
B.润滑剂
C.黏合剂
D.崩解剂
E.吸收剂
参考答案:E
Let's learn to use the problem we are facing _____ a stepping-stone to future success. [ ]
A. to
B. for
C. as
D. by
某一中载齿轮决定用45钢制造,其最终热处理采用下列哪种方案为宜()
A、淬火+低温回火
B、渗碳后淬火+低温回火
C、调质后表面淬火
D、正火