提示血容量不足() ["中心静脉压很低,尿量多","中心静脉压偏低,尿量少","中心静脉压偏低,尿量多","中心静脉压偏高,尿量多","中心静脉压很高,尿量少"]
女性,22岁。近3个月余出现发热、咽痛、牙龈出血,自服阿莫西林后咽痛缓解,仍有发热,乏力,并胸骨压痛,就诊检查示血红蛋白72g/L,血小板57×109/L,骨髓原始细胞37%,确诊为急性白血病,分类诊断应首选的检查是() ["骨髓象","血象","细胞遗传学检查","细胞化学染色","免疫学检查"]
不属系统性红斑狼疮活动性指标的是() ["活动性炎症损害如皮疹、关节炎","全身症状如发热","抗双链DNA抗体效价升高","C3、CH50水平减少","CH50、C3增高"]
痹证日久出现关节周围结节、关节肿大畸形的病机是() ["气血不足","肝肾亏虚","瘀血痰浊痹阻经络","寒湿留滞经脉","湿热壅滞经脉"]
σ表示的含义是() ["总体均数的标准误","总体均数的标准误估计值","样本均数的标准误","样本均数的标准误估计值","以上均不正确"]
可复性牙髓炎()。无髓牙变色()。