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(A)腸繫膜缺血(mesenteric ischemia)
(B)腸阻塞(intestinal obstruction)
(C)急性膽囊炎(acute cholecystitis)
(D)急性腸胃炎(acute gastroenteritis)

答案：登入後查看
統計： A(10), B(5), C(1), D(0), E(0) #1096245