The girl wants to English her teacher. [ ]
A. speak, in
B. learn, from
C. in, for
答案:B
血容量不足的最可靠表现是()。
A.CVP4.0cmH2O
B.机械呼吸时血压随呼吸波动大于8mmHg
C.血球比容28%
D.血浆总蛋白浓度58g/L
E.有创血压为85/58mmHg
肾糖阈