社区警务室建设在硬件和软件上,具体要求是“五个一”,其中包括的有( )
A. 一张办公桌
B. 一个记录本
C. 一个警民联系牌
D. 一本警民联系簿
E. 一个警务公开栏
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Read Text A and then complete the following passage.阅读课文A,然后完成下面的短文。Before I was a minimalist, I used to(1)_______ a lot of things,(2)_________ with others and I could(3)__________ focus on anything. After I was a minimalist, I have(4)__________ things around, and I have started feeling(5)___________each day than before, and beginning to understand what _____________ is.
推挽输出的比较器有#tk#个三极管。
A. 一个
B. 两个
C. 三个
若开漏输出方式,输出高电平需要外接#tk#电阻。
A. 上拉电阻
B. 下拉电阻
GPIO 最简单的功能是#tk#。
A. 输出高低电平
B. 控制信号
C. 存储数据