鼻腔的pH值是() A.8.0 C.7.1~8.0 D.5.5~7.0

Freeti2020-05-20  5

问题 鼻腔的pH值是()A.<5.5B.>8.0C.7.1~8.0D.5.5~7.0E.7.0~8.0

选项

答案D

解析
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