单选题:呈不规则的类圆形片或斜切片,切面木部有放射状纹理或皮部有众多黄棕色绵状纤维的饮片是

题目内容:
呈不规则的类圆形片或斜切片,切面木部有放射状纹理或皮部有众多黄棕色绵状纤维的饮片是 A.炮附片   
B.绵马贯众   
C.地榆   
D.狗脊   
E.白芷
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