题目内容：
人民警察的纪律主要有下列四个方面：政治纪律、组织纪律、（ ）、保密纪律。
A．职业道德 B．文明执勤
C．行动纪律
D．工作纪律
参考答案：
答案解析：
单选题：人民警察的纪律主要有下列四个方面：政治纪律、组织纪律、（ ）、保密纪律。
- 题目分类：公安基础知识
- 题目类型：单选题
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B．文明执勤
C．行动纪律
D．工作纪律
B．文明执勤
C．行动纪律
D．工作纪律
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为了按时完成实验，这位科学家从未在午夜前就寝过。
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