(2001)女,1岁。发热伴咳喘3天,口周稍青紫。用鼻前庭导

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问题: (2001)女,1岁。发热伴咳喘3天,口周稍青紫。用鼻前庭导管吸氧,氧流量应为

A: 0.5~1L/min

B:1.5~2L/min

C:2.5~3L/min

D:3.5~4L/min

E:4.5~5L/min