己知集合A={l,2,3),集合B=(2,3,4),则A∩(CNB)= [ ]
A.{1}
B.{0,1}
C.{1,2,3}
D.{2,3,4}
答案:A
After a gastrectomy, the client will have a nasogastric tube in place for several days postoperatively. The nurse explains to the client that the nasogastric tube is for which of the following reasons
A. Prevent excessive pressure on suture lines.B. Prevent the development of ascites.C. Provide enteral feedings in the immediate postoperative period.D. Enable administration of antacids to promote healing of the anastomosis.
(1~4题共用题干)男,45岁,右上腹隐痛伴发热1周2小时前下床突发头晕,面色苍白既往有胃病及乙肝病史。查体脉搏120次/分,血压79/53mmHg,腹胀,全腹压痛,以右上腹为甚实验室检查:Hb75g/L,白细胞升高,乙肝表面抗原阳性。
最可能的诊断为
A.消化性溃疡穿孔
B.胆囊穿孔
C.肝癌自发性破裂
D.绞窄性肠梗阻
E.消化道出血