题目内容

关于气道阻力的叙述正确的是

A. 气道口径越小阻力越大
B. 气流速度越快阻力越小
C. 气流为湍流时阻力增加
D. 吸气时阻力小于呼气时

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下列指标中含有潮气量的是

A. 深吸气量
B. 补呼气量
C. 肺活量
D. 肺总容量

肺泡表面活性物质的生理作用有

A. 维持肺泡稳定性
B. 调节肺泡回缩力
C. 降低肺泡表面张力
D. 防止液体渗入肺泡

Answer these questions using the words given and information from the article.When you move abroad......A. will it be possible to do everything right? ——No, you will _(1).B. how might you feel after two or three months? ——In a _(2). This is all part of the (3) that people follow.C. will you definitely feel, after a few months, that you've done the right thing? ——No, you might _(4)_.D. how will you feel after a few more months, if your experience is typical? ——At _(5)_.E. how will knowing what other people feel about the experience help you? —— It should (6)_.

印制电路板英文简称______