Which of the following about ventilation/perfusion ratio is wrong?
A: normal value in quiet state is 0.84
B: decreasing of ventilation/perfusion ratio means that the alveolar ineffective cavity increases
C: ratio in pulmonary bottom is the smallest
D: in pulmonary embolism, the ratio increases
A: normal value in quiet state is 0.84
B: decreasing of ventilation/perfusion ratio means that the alveolar ineffective cavity increases
C: ratio in pulmonary bottom is the smallest
D: in pulmonary embolism, the ratio increases
举一反三
- Which<br/>one is not correct about ventilation/ perfusion ratio? () A: the<br/>normal value is 0.84 in resting state B: its<br/>decreasing means the increasing of physiologic dead space C: its<br/>value reaches to 3 at apex of lung D: its<br/>value decreases at inferior part of lung because there is not<br/>sufficient gas exchange there E: when<br/>it undergoes embolism in pulmonary artery, its value decreases
- Which of the following is expenses ratio? ( ) A: Selling and Distribution expenses ratio B: Finance Expenses ratio C: Factory expenses ratio D: Administrative expenses ratio
- Which of the following is primary function of mechanical ventilation? A: Maintain alveolar ventilation and correct hypoxemia B: Increase carbon dioxide C: Increase blood volume D: Maintain pulmonary blood flow
- Among the following ratios, which is used for efficiency analysis? A: quick ratio B: accounts receivable turnover C: debt-to-equity ratio D: net profit ratio
- Among the following ratios, which is used for long-term solvency analysis? ( ) A: current ratio B: Times-interest-earned ratio C: Operating cycle D: Book value per share