女性，67岁。慢性支气管炎合并肺气肿病史25年，1周来病情加重，咳嗽，心悸，气喘，夜间不能平卧。血气分析：PaO250mmHg， PaCO260mmHg，pH7.30。改善缺氧，应首选的治疗措施是
A. 持续高浓度给氧
B. 持续低浓度给氧
C. 不需给氧
D. 机械通气
E. 给予呼吸兴奋药
查看答案
Compared to paper cards, e-cards have the following advantages except ______.
A. easier to get
B. quicker to send
C. more efficient
D. more attractive
急性肺水肿可出现
A. 捻发音
B. 两肺野满布湿哕音
C. 鼾音
D. 哮鸣音
E. 局限性湿哕音
Mrs. Hanson is the sort of people who ______.
A. cares for study very much
B. never misses a chance to talk
C. tries to save every penny for her family
D. likes to borrow money from the bank
One difficulty has been solved. But another one will ______.
A. arise
B. rise
C. arouse
D. arose
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