望色十法中"抟"是指()
A.面色壅滞
B.面色疏散
C.面色浊暗
D.面色清明
E.面色枯槁
参考答案:A
—Could you help me with my English this aftenoon?
—Sorry,but I have made a(an) _ to see the doctor. [ ]
A. promise
B. agreement
C. appointment
D. message
关于血液酸碱平衡,以下哪些是错误的()
A.pH取决于HCO与PC0的比值
B.只要HCO与PC0保持20:1,不会出现酸碱紊乱及pH改变
C.血气参数中直接测定的是HCO和PaC0
D.碱中毒时HCO与PC0比值大于20:1
E.酸中毒时HCO与PC0比值大于20:1