含有易挥发性成分的动物类药材是
A.玫瑰花、款冬花、扁豆花、佛手片B.刺猬皮、九香虫C.黄精、党参、天冬D.杏仁、柏子仁、砂仁E.厚朴、肉桂、砂仁
参考答案:B
Since the beginning of this year no issue _____ yet.[ ]
A. is published
B. has been published
C. will be published
D. was published
变电站控制室内信号一般分()信号、()信号、()信号。