乳剂不稳定的原因是
O/W型乳剂转化成W/O型乳剂或者相反的变化
A．分层B．絮凝C．转相D．破裂E．酸败
参考答案：C
不能作为重载函数的调用的依据是（ ）。
A．Enabled和Default
B．Enabled和Visible
C．Default和Cancel
D．Visible和Default
_____ he is,he can do what the adult can't do. [ ]
A. Young child as
B. Young child although
C. A young child as
D. As he is a young child
