难溶性的药物片剂一般应作
A．重量差异检查B．崩解时限检查C．含量均匀度检查D．溶出度测定E．不溶性微粒检查
参考答案：D
The old man told us _______ and ________.
A．to do what , to do how
B．what to do it, how to do it
C．what to do, how to do it
D．what to do , how to do
