形成水冲脉的原因是()。
A.脉压增大
B.收缩压降低
C.舒张压升高
D.吸气时右心室充盈压增高
E.心包内压增加
参考答案:A
血浆阴离子间隙降低见于()
A.乳酸性酸中毒
B.糖尿病酮症酸中毒
C.严重低血氧、休克
D.肾功能不全性酸中毒
E.高氯性代谢性碱中毒
He said that he was ()aware of the difficulty of being a father.
A.highly
B.fully
C.soundly
D.firmly