患者女,56岁。气短3个月,胸片显示右上纵隔增宽,右肺上叶支气管狭窄应首先考虑为()
A.纵隔淋巴癌
B.胸腺癌
C.大动脉瘤
D.中心型肺癌
E.肺结核
参考答案:D
— ________
—He's a doctor. [ ]
A. What is he like?
B. Where does he work?
C. What does he do?
D. What does he look like?
泵的扬程大,不一定()就大。
A.克服吸、排管路阻力的能力
B.能吸上液体的高度
C.能克服的吸、排液面压差
D.能排送液体的高度