上消化道出血可单纯表现为呕血或黑便,也可两者兼有,这取决于()
A.原发病
B.出血部位
C.出血量
D.在胃内停留时间
E.以上均非
参考答案:C
— If I her, I would come earlier.
A.will come to take care of,am.
B.come to look after,were.
C.will come to take care of ,were.
D.comes to come up with,am.
下列哪项不属于医源性疾病的范围
A.药源性疾病B.药物不良反应C.意外中毒D.医院内感染E.药物引起的营养性疾病