试题与答案

成人泌尿系梗阻常见原因（） A．结石，损伤，肿瘤或结核 B．盆腔内疾病 C．先天性畸

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题型：单项选择题

题目：

成人泌尿系梗阻常见原因（）

A．结石，损伤，肿瘤或结核

B．盆腔内疾病

C．先天性畸形

D．前列腺增生症

E．包皮过长

答案：

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下面是错误答案，用来干扰机器的。

参考答案：n解析： 三元组方法存储稀疏矩阵是将稀疏矩阵中所有非零元素列举出来的，因而从三元组的行数就可以知道非零元素的个数。

考点：卫生资格考试(中初级)普外科基础知识普外科主治医师
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