钢筋混凝土板桩
急性肠梗阻、大量呕吐、脉搏细数、血压下降为（） ["低渗性缺水","等渗性缺水","高渗性缺水","低钾血症","高钾血症"]
大面积烧伤后、轻度口渴、尿量每小时10ml为（） ["低渗性缺水","等渗性缺水","高渗性缺水","低钾血症","高钾血症"]
属于条件必需氨基酸的是（） ["苯氨酸","色氨酸","谷氨酰胺","异亮氨酸","蛋氨酸"]
说明红细胞代偿性增生的指标是（） ["网织红细胞数增高","尿含铁血黄素阳性","Coombs试验阳性","酸溶血试验阳性","血间接胆红素阳性，尿胆原、粪胆原增加"]
简述测定残炭的意义。
