长期呼吸机通气支持的患者吸入的氧浓度以多少为宜()。 A.30%~40% B.45% 发布时间:2017-05-12 07:51 │ 来源:www.tikuol.com 题型:单项选择题 问题: 长期呼吸机通气支持的患者吸入的氧浓度以多少为宜()。A.30%~40%B.45%C.40%~50%D.50%E.60%
题型:单项选择题 The original building was erected in 1710, but this structure has been largely transformed and extended, the present hotel______in 1910.A.was completedB.to have been completedC.having been completedD.completed 查看答案