患者外周血涂片示红细胞较小、中心淡染，RDW为18.6%，其最可能的诊断是() ["A．轻型珠蛋白生成障碍性贫血","B．缺铁性贫血","C．再生障碍性贫血","D．巨幼细胞性贫血","E．自身免疫性溶血性贫血"]
下肢静脉曲张的主要临床表现是() ["A．趾端皮肤麻木，感觉过敏","B．下肢酸胀乏力","C．久站足部浮肿","D．趾端坏死","E．下肢静脉隆起"]
患者MCV、MCH、MCHC均小于正常，最可能是() ["A．慢性肝病性贫血","B．巨幼细胞性贫血","C．慢性失血性贫血","D．急性失血性贫血","E．再生障碍性贫血"]
温氏法测定血细胞比容，离心后应读取到() ["A．血小板层","B．白细胞层","C．有核红细胞层","D．还原红细胞层","E．带氧红细胞层"]
下肢浅静脉间的交通支瓣膜功能试验，分段检查的部位是() ["A．腹股沟下方","B．膝上部","C．膝下部","D．大腿中部","E．踝部"]
背景
