【名词&注释】
弥散功能障碍(diffusion dysfunction)
[单选题]某患者血压分析示：pH7.32，PaCO252mmHg，PaO254mmHg，HCO3-27mmol/L。
该患者发生低氧血症最主要的机制是
A. 氧耗量增加 B 弥散功能障碍 C 右向左分流D 通气血流比例失衡
B. 肺泡通气量下降
查看答案&解析
举一反三：
[单选题]
A. forB． as
B. at
C. with
[单选题]Which of the following statements is NOT true?
A. Latchkey children feel free at home.
B. Working parents often leave their children alone at home.
C. Many parents do not admit that they leave their children alone.
D. Latchkey children have to learn to take care of themselves.
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