8个月婴儿,急起喘憋1天。查体:体温38.1℃,呼吸82次/分,心率160次/分,烦躁不安,唇发绀,满肺哮鸣音,喘憋缓解时可闻少许中、细湿啰音,肝右肋下2cm。为进一步确诊,下列检查哪项能帮助快速诊断() ["A.血象检查","胸部X线摄片","鼻咽拭子分泌物标本作病毒分离","气管吸出物、血液作细菌培养","免疫酶标法测鼻咽拭子或痰中病原微生物"]
M型超声是指() ["振幅调制型","辉度调制型","彩色血流显像","多普勒频谱显示","以上都不是"]
属于低度危险物品的是() ["胃镜","听诊器","穿刺针","导尿管","腹腔镜"]
由于入射声束与曲面相互作用造成的伪像称为:() ["幻影伪像","振铃伪像","彗尾伪像","边缘伪像","折射伪像"]
少尿的诊断标准是() ["日尿量<800ml","日尿量<500ml","日尿量<300ml","日尿量<200ml","日尿量<100ml"]
反映定量变量观察数据集中位置的指标是()在正态分布条件下表示变量值变异情况的指标最常用的是()