问题描述：
[单选]
45岁男性，患有重症胆石性胰腺炎。目前接收输液及禁食治疗。下列哪种酶由胰腺产生并以活性形式释放？A 45-year-old man has severe gallstone pancreatitis． Currently he is receiving IV fluids and is NPO． Which of the following enzymes is produced by the pancreas and secreted in its active form？
A．淀粉酶Amylase
B．胰蛋白酶Trypsin
C．糜蛋白酶Chymotrypsin
D．缩胆囊素CCK
E．胃泌素Gastrin
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上一篇：45岁男性患者因剧烈腹痛就诊于急诊科。自述每天饮一夸脱伏特加及吸烟1-2包/天。体温38℃，血压112/92 mmHg，脉搏20 次/分，呼吸24次/分。主要表现为上腹部剧痛。依据入院Ranson评分标准，下列哪项可用于评估患者疾病严重程度？A 45-year-old man comes to the ED with severe abdominal pain． He admits to drinking a quart of vodka daily and smokes one to two packs of cigarettes daily． His temp is 38 C， BP is 112/92， with a pulse of 20/minute and RR of 24/minute． Severe epigastric tenderness is also noted． According to the Ranson criteria on admission which of the following variables can predict the severity of this patient’s illness？
下一篇：68岁男性门诊就诊时发现巩膜黄染。自述近期发现尿液颜色加深，粪便颜色变浅；伴有食欲减退但无其他特殊不适。既往史无明显异常，吸烟史30年，已戒13年。查体，体温及生命体征正常。确诊有黄疸，在右上腹部可触及一个无痛性，光滑的圆形肿块。其它检查未见异常。该患者最可能的诊断为？A 68-year-old man presents to the clinic with yellow eyes． He has recently noticed his urine is dark and his stool is light in color． In addition， he has had a diminished appetite but otherwise is feeling well without other complaints． Past medical history is unremarkable． He has smoked for 30 years but quit 13 years ago． On examination， he is afebrile and his vitals are normal． He is jaundiced and during examination of his abdomen， a nontender smooth globular mass was found in the RUQ． The rest of the examination is normal． What is the most likely diagnosis for this patient？
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