急性心包炎胸痛的特点是()
A.前俯位时加重
B.前俯位时减轻
C.随积液的增多而加重
D.疼痛不放射到其他部位
E.深呼吸时减轻
参考答案:B
Does your father work in a factory? [ ]
A. Yes, he does.
B. No, he does.
C. Yes, he doesn't.
肺功能检查时第一秒用力呼出气量占用力肺活量的多少为正常()。
A.≥40%
B.≥50%
C.≥60%
D.≥70%
E.≥80%