There are the complications resulting from peptic ulcers except for( )() A: ulcer bleeding B: constipation C: ulcer perforation D: gastric obstruction

中国大学MOOC: 在国际空间站设计之初，规定的防护设计指标是10年中的非击穿概率PNP(Possibility of No Perforation)不低于（ ）

The patient, a 38-year-old male, suffered from repeated epigastric pain for many years, and suddenly developed severe abdominal pain with abdominal muscle tension in a plate-like abdomen. The most likely cause was: A: Acute cholecystitis B: Perforation of stomach or duodenum C: Acute pancreatitis D: Rupture of spleen E: Rupture of kidney