下列各项,可出现骨髓巨核细胞增多的是() ["再生障碍性贫血","白细胞减少症","特发性血小板减少性紫癜","急性白血病","骨髓增生异常综合征"]
患者男,70岁。3周前左侧下颌前部肿痛,经消炎药治疗后现已缓解。查见残根,不松动,X线片见根尖周透射区约3mm×5mm,根尖部少量外吸收。当日应做的治疗为()。 ["塑化治疗","覆盖义齿","根尖手术","根管治疗","拔除"]
特发性血小板减少性紫癜的诊断依据不包括() ["广泛皮肤、黏膜及内脏出血","血小板计数减少","骨髓巨核细胞成熟障碍","脾脏正常或轻度肿大","泼尼松治疗无效"]
下列关于特发性血小板减少性紫癜的实验室检查描述,错误的是() ["出血时间延长","血块退缩不良","毛细血管脆性试验阳性","凝血时间延长","血小板寿命缩短"]
描述一组近似正态分布资料的离散趋势,最好采用() ["全距","标准差","变异系数","四分位数间距","极差"]
壮水之主,以制阳光