药用部位为根及根茎的有() ["甘草","川芎","当归","大黄","人参"]
农业资源是农业自然资源和农业社会资源的总称。
位于前臂后区,腕背横纹上1寸,尺骨头桡侧凹陷中的腧穴是() ["后溪","支正","外关","养老","支沟"]
桡骨茎突狭窄性腱鞘炎() ["肩关节外展受限","肩部疼痛,无活动受限","肘关节肱骨外上髁伸肌附着处压痛","肘关节活动受限","Finkelstein试验阳性"]
在△ABC中,已知a=25,b=9,c=21,则ΛC=()。 ["60","40","55","50"]
什么是中水?