NAVLE（北美执业兽医考题）Day 613

单选题，正确答案是100分，非正确答案为0分，Good Luck！

Hemoglobin concentration is roughly what percentage of red blood cell packed cell volume (PCV) in a normal animal?

正常动物身上血红蛋白浓度大约是其红细胞压积的百分之几？