判断上消化道出血部位最好的检查方法是:() ["内窥镜检查","钡餐检查","B超检查","选择性动脉造影","胃液分析"]
简述白血病的实验室检查。
关于上消化道出血,下列哪种说法不对:() ["呕血多见于幽门以上部位出血","呕血者有黑便而黑便者不一定有呕血","应包括胆道出血","胃大部切除后的空肠上段出血也属于上消化道出血","上消化道出血均是消化系统疾病所致"]
引起上消化道出血的最常见的疾病是:() ["胃溃疡","十二指肠溃疡","肝硬化食管、胃底静脉曲张破裂","胃癌","出血性胃炎"]
关于上消化道出血的处理哪项有误:() ["时患者保持安静","注意观察尿量变化","一律禁食","定期复查血象","防治失血性休克"]
简述白血病的诊断要点。