【名词&注释】
碘化钾(potassium iodide)、踝关节(ankle joint)、髋关节(hip joint)、造影剂(contrast media)、静脉注射(intravenous injection)、肘关节(elbow joint)、脾肾阳虚(yang deficiency of spleen and kidney)、传统医学(traditional medicine)、肾阳虚衰(deficiency of the kidney-yang)、腕关节背伸
[单选题]真武汤的主要病机是
A. 肾阳虚衰(deficiency of the kidney-yang),寒湿内盛
B. 肾阳亏虚,水气泛滥
C. 脾肾阳虚(yang deficiency of spleen and kidney),关门不利
D. 下元亏虚,气化不利
E. 邪侵少阴,肾失所主