单选题：慢性支气管炎、阻塞性肺气肿患者。3天来咳嗽、气促加重。皮肤潮红、多汗，眼球结膜水肿，根据病情应给予

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慢性支气管炎、阻塞性肺气肿患者。3天来咳嗽、气促加重。皮肤潮红、多汗，眼球结膜水肿，根据病情应给予 A．高流量持续给氧
B．高流量间歇给氧
C．低流量持续给氧
D．低流量间歇给氧
E．面罩加压给氧

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答案解析：

发绀是由于

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Thereadercanconcludethat______．

Thereadercanconcludethat______．A．countriesoftheworldwillworktogetheronpollutionp

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The children lined up and walked out

The children lined up and walked outA．in person B．in private C．in order D．in pr

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-Who is he? Is he our new teacher?-I'm sorry. I don't know

-Who is he? Is he our new teacher?-I'm sorry. I don't know _______and_______he

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The story is hard to understand_______there are no new word

The story is hard to understand_______there are no new words in it.A．but B．so C

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