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)?

The cat looks ________ in the rain. A: a little and poor B: little and poor C: is little and poor D: is little and is poor

His health is ______. A: as poor, if not poor than his sister B: poor as his sister"s if not poor C: as poor as if not poorer than his sister"s D: as poor, if not poorer than sister"s

he is, he is happy every day. A: Poor as B: As poor C: Even though poor D: Although poor