饮片折断面呈颗粒性的药材为（）
A．苦楝皮
B．牡丹皮
C．厚朴
D．苏木
E．木瓜
参考答案：D
—What does the policewoman in the picture mean?
—She tells you to .
A. go straight B. stop C. turn back
锅炉省煤器后烟汽量大说明什么？
