题型:名词解释 口对口人工呼吸,下列哪项错误A.操作者深吸一口气,对准病人口部呼出B.吹气时捏紧病人鼻孔C.首先必须保证呼吸道通畅D.最适合于现场复苏E.若操作正确,病人PaO2可达75mmHg,SaO2高于90% 查看答案
题型:名词解释 "An idea" as used in Line 5, refers to ______.A.a model of matterB.emission of electromagnetic radiationC.quantumsD.the equation that described the distribution of radiation accurately over the range of low to high frequencies 查看答案