一年轻男子,饱餐后突发中上腹部刀割样剧痛,板状腹,最可能的诊断是()。
A.胃溃疡
B.急性胃炎
C.急性胆囊炎
D.急性胰腺炎
E.以上都不是
参考答案:E
Tom's uncle knows computers well, and he a computer engineer. [ ]
A. maybe
B. may be
C. may be is
D. may is
生活饮用水水质卫生标准规定大肠菌群不超过()
A.100个/ml
B.100个/3ml
C.3个/ml
D.100个/100ml
E.3个/1000ml