女性,32岁,月经增多伴发热2周,HGB50g/L.WBC1.2×109/L,PLT20×109/L,网织红细胞0.3%,初次髂骨穿刺骨髓检查提示:骨髓象成熟红细胞与有核细胞比例100:1从发病机制考虑该病的贫血性质是() ["A.骨髓造血功能急性停滞性","先天性红细胞生成异常性","骨髓增生不良性","红细胞破坏过多性","红细胞合成障碍性"]
男,67岁。有冠心病病史,因门脉高压症合并上消化道急性大出血入院。体检:巩膜黄染,有明显腹水。应用三腔管的注意事项错误的是(). ["A.预防吸入性肺炎","防止气囊滑出堵塞咽喉","每隔12小时将气囊放空10~12分钟","拔管前应给病人口服液体石蜡","悬挂2.0kg重物维持拉力"]
糖尿病酮症酸中毒时口腔内可产生() ["A.鼠尿味","B.大蒜味","C.烂苹果味","D.肝臭","E.腐烂味"]
食管癌病人出现大量呕血,提示肿瘤侵入() ["喉返神经","肝","主动脉","气管","肺"]
某医生用甲药治疗某病患者13例,治愈8人;乙药治疗11例,治愈3人,比较两种药物的疗效,那种方法更合适() ["M检验","X2检验","校正X2检验","直接概率法","F检验"]
试述残疾评定的步骤。