浸泡饮片时,一般水量应高于药面()
A.1~2cm
B.2~3cm
C.3~4cm
D.3~5cm
E.4~5cm
参考答案:D
解析:[知识点] 中药煎药操作常规
Helen didn’t know anything about it her father told her.
A.if
B.because
C.after
D.Until
()不含任何结点的空树。
A.是一棵树;
B.是一棵二叉树;
C.是一棵树也是一棵二叉树;
D.既不是树也不是二叉树