单项选择题
A.3.0mm B.2.5mm C.3.5mm D.2.0mm
A.气胸 B.二氧化碳潴留 C.瘀斑 D.胃充盈
A.15s B.20s C.25s D.30s
A.80-85% B.90% C.90-95% D.100%
微信扫一扫,加关注免费搜题