The ( ) side of the heart receives ( ) blood from the body tissues and then pumps this blood to the lungs to pick up oxygen and dispel carbon dioxide. A: left; oxygen-poor B: left; oxygen-rich C: right; oxygen-rich D: right; oxygen-poor

戴上氧气面罩呼吸。 A: Breathe into the oxygen mask. B: Exhale into the oxygen mask. C: Inhale into the oxygen mask.

The oxygen partial pressure or the amount of oxygen in arterial blood is called:

2. When isotonic hypoxemia occurs A: Reduced blood oxygen content B: Decreased partial pressure of arterial blood oxygen C: Decreased oxygen saturation of hemoglobin D: Normal blood oxygen content E: Tissue cell utilization oxygen disorder

6. Partial pressure of arterial blood oxygen refers to A: Oxygen partial pressure when oxygen saturation of hemoglobin is 50% B: Tension caused by oxygen molecules dissolved in arterial blood C: Hemoglobin and oxygen binding capacity D: The actual number of milliliters containing 02 in 100ml of blood E: Tension created by chemically bound oxygen in the blood

Partial pressure of arterial blood oxygen refers to ( ) A: Tension caused by oxygen molecules dissolved in arterial blood B: Oxygen partial pressure when oxygen saturation of hemoglobin is 50% C: Hemoglobin and oxygen binding capacity D: The actual number of milliliters containing 02 in 100ml of blood E: Tension created by chemically bound oxygen in the blood

In aerosols, sunlight splits NO2 into .(NO and atomic oxygen / oxygen and atomic N)?

() and the poor are quite different in their opinions of the political candidates(候选人). A: Rich B: The rich C: Rich D: A rich

The blood delivers oxygen to the body.

oxygen bottle：氧气面罩