Cyanosis appears when deoxyhemoglobin concentration of the blood in the capillaries is more than ( )
A、1g/dl;
B、3g/dl;
C、5g/dl;
D、7g/dl;
E、9g/dl
发布时间:2025-07-12 04:16:55
A、1g/dl;
B、3g/dl;
C、5g/dl;
D、7g/dl;
E、9g/dl