血氧饱和度
参考答案:
血氧饱和度:是指血红蛋白被氧饱和的程度,以百分比表示,即血红蛋白的氧含量与氧容量之比乘以100。
I can remember very few ____ when he had to cancel his plans because of poor health.
A.situations
B.conditions
C.occasions
D.circumstances
通过全塔的物料衡算可以得出进料与各产品之间的流量与组成的关系。