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问题 单项选择题

排便时，间歇性带血，并有肿物脱出肛门外，排便完自行还纳，诊断为

A．Ⅱ度内痔
B．Ⅲ度内痔
C．直肠息肉
D．外瘘
E．直肠粘膜部分脱垂

答案

参考答案：A

解析：[解题思路] 根据症状及体征，可诊断为Ⅱ度内痔。

填空题

在程序设计阶段应该采取______和逐步求精的方法，把一个模块的功能逐步分解，细化为一系列具体的步骤，继而用某种程序设计语言写成程序。
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