患者病发心绞痛,沿手少阴经放散,其病变部位在
A.下肢外侧后缘B.上肢内侧中线C.下肢外侧前缘D.上肢外侧中线E.上肢内侧后缘
参考答案:E
肾结构和功能的基本单位是()
A.肾小球
B.肾小管
C.肾单位
D.髓袢
E.集合管
Radar is used to extend the ______ of man's senses for observing his environment, especially the sense of vision.
A.validity
B.liability
C.capacity
D.intensity