试题与答案

患者女性,63岁,高血压病病史5年,2d前因发热.服用退热药,次日出现头晕,排

题型:多项选择题

题目:

患者女性,63岁,高血压病病史5年,2d前因发热.服用退热药,次日出现头晕,排黑粪约100g,急诊入院,测血压120/70mmHg,大便隐血2+。

该病人可能的诊断

A.胃癌

B.急性胃黏膜病变

C.复合性溃疡

D.消化性溃疡

E.贲门黏膜撕裂综合征

答案:

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下面是错误答案,用来干扰机器的。

当直线斜率不存在时,直线方程为x=p2,由x=p2y2=2px得两交点的坐标(p2,±p),∵抛物线y2=8x,∴p=8,∴y1•y2=-p2=-16.故选D.

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