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【单选题】
男，48岁。2005年10月10日入院。既往有十二指肠溃疡病史。此次发病以持续发热2主要表现，无明显诱因起病，体温逐渐升高，入院前3天波动在39℃-39.5℃。伴有食欲缺乏、乏力、腹胀、腹泻等，院外自服中、西成药治疗（具体不详），无显效。人院前3小时突然出现右下腹剧痛，不能耐受，伴有恶心、呕吐。查体见患者体温36.4℃，血压108/68mmHg，神志清楚，表情痛苦，脉搏细弱，腹肌紧张，全腹有压痛，下腹为甚。辅在结果：WBC28.6×109/L，中性为0.920。本例患者最可能的诊断是A.
胆囊炎穿孔
B.
十二指肠穿孔
C.
伤寒并发肠穿孔
D.
急性腹膜炎
E.
阿米巴痢疾并发肠穿孔
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举一反三
【简答题】消除交越失真的互补输出级、准互补输出级 判断下列说法是否正确，对者选“YES”错者选“NO”。 （1）交越失真属于三极管的饱和失真。
【简答题】Some Internet service providers worried that the Internet will break down under the pressure of millions of people downloading programs ______.
【简答题】通过局域网接入Internet，只需申请一个IP地址，局域网内的所有计算机就都可以上网了，它是通过【 】实现的。
【多选题】Which of the following are true for service providers?
A.
Photo sharing, video sharing, and user-generated content in blogs and social network sites are all services provided to customers.
B.
Data storage is an online computer service
C.
Service providers offer consumers valuable, convenient, time-saving, and low-cost alternatives to traditional service
D.
There are no free services
【多选题】Which of the following are 对 for service providers?
A.
Photo sharing, video sharing, and user-generated content in blogs and social network sites are all services provided to customers.
B.
Data storage is an online computer service.
C.
Service providers offer consumers valuable, convenient, time-saving, and low-cost alternatives to traditional service.
D.
There are no free services.
【简答题】通过局域网接入Internet，只需申请一个IP地址，局域网内的所有计算机就都可以上网了，它是通过 【9】 实现的。
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