血管内皮释放的NO的作用有()
A.舒张血管
B.降低血压
C.抑制血小板的粘附
D.抑制血小板的聚集
E.收缩血管
参考答案:A, B, C, D
女性,65岁,上腹不适2个月,伴大便次数增多和排暗红色便。查体:腹平软,中上腹可触及一直径3.5cm的肿物,化验:血红蛋白60g/L,大便隐血(+)。最可能的诊断是
A.胃癌B.横结肠癌C.胆囊癌D.壶腹周围癌E.肝癌
Mary ________ a smile when she heard her family went to Australia without her.
A.wore
B.performed
C.controlled
D.managed