判断机体酸碱平衡的最基本指标是()
A.pH
B.HCO-3
C.CO2CP
D.BE
E.PaCO2
参考答案:A
缺血性和出血性脑血管病的鉴别诊断,主要是哪些?
We must be off _____. It’s eight o’clock already.
A.a moment ago
B.all of a sudden
C.in no time
D.all right