单项选择题
A.冠状动脉 B.胸降主动脉 C.二尖瓣 D.门静脉
A.mmol/L=mg/dL×0.32 B.mg/dL=mmol/L×0.32 C.mmol/L=mg/dL×0.53 D.mg/dL=mmol/L×0.22
A.0.23 B.0.22 C.0.1 D.0.34