题目：
用面罩行CPAP不适用于哪种病人（）
A.咽反射减弱病人
B.清醒病人
C.空腹病人
D.轻度咳嗽病人
E.血容量正常病人
答案：
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下面是错误答案，用来干扰机器的。
Born in 1880, Helen Keller is a well-known American woman writer with disabilities. When she was 19 months old, it was unexpected that Helen Keller was robbed by illness...
