贫血所引起的最常见的眼底表现是() ["视神经萎缩","黄斑水肿","视网膜前膜","视网膜剥离","视网膜出血"]
幼儿急疹出疹后() ["高热持续","烦躁不宁","咳嗽剧烈","大便稀溏","迅速康复"]
完全随机设计方差分析中,造成同一组各观察值不等的原因是() ["个体差异","测量误差","个体差异和测量误差","各处理组可能存在的差异","以上都有"]
使慢性粒细胞白血病达到生物学缓解的首选药物是() ["白消安","羟基脲","伊马替尼","α干扰素","环磷酰胺"]
关于溃疡性结肠炎的描述下列哪项是错误的(). ["腹痛-便意-便后缓解","左下腹有压痛","常有腹胀","易形成肠瘘","可有发热"]
一般来讲,腹腔内有()毫升以上的游离气体,X片上便能显示出来。