产后小便不通的主要病因病机为
A.气虚不摄B.膀胱气化不利C.湿热下注膀胱D.膀胱失约E.瘀血阻滞
参考答案:B
设计电气工程应遵守哪些原则?
If a ring is stamped 24K, it has ______.
A.204 parts of gold
B.24 parts of gold
C.two and four-tenths parts of gold
D.10 parts of gold