治疗痔疮便血的药是()
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
The hotel has been enlarged; ____, its service is improving.
A.as a result
B.on the other hand
C.in addition
D.as well as
在气相色谱分析中为了测定下面组分,宜选用哪种检测器?(1)蔬菜中含氯农药残留量;(2)测定有机溶剂中微量水;(3)痕量苯和二甲苯的异构体。