青少年机器人技术等级考试理论综合试卷（六级）
分数： 100
题数： 30
一、 单选题(共 20 题， 共 80 分)
1.下图是三相反应式步进电机工作示意图， 图示所对应的工作方式为？ （ ）
A.三相单双三拍
B.三相单三拍
C.三相双三拍
D.三相单双六拍
标准答案： B
2.I2 C 串行通信有两根数据线， 用于发送时钟信号的是？ （ ）
A.SDA
B.SCL
C.TX
D.RX
标准答案： B
3.ESP32 主控板 WiFi 的连接方式如下图所示， 该主控板的 WiFi 工作模块是？ （ ）
A.客户端
B.STA
C.AP
D.STA+AP
标准答案：B
4.一台计算机连接到互联网， 可完成网页浏览、 邮件发送等任务， 不同服务在应用层分别具有不同的？ （ ）
A.IP 地址
B.传输层协议
C.端口
D.网络层协议
标准答案： C
5.ESP32 for Arduino I2 C 类库的下列成员函数中， 用于将从设备的地址加入到发送数据队列的成员函数是？ （ ）
A.Wire. begin()
B.Wire. write()
C.Wire. beginTransmission()
D.Wire. endTransmission()
标准答案： C
6.I2 C 串行通信， 当总线空闲时， 串行时钟线的电平是？ （ ）
A.低电平
B.高电平
C.上升沿
D.下降沿
标准答案： B
7.HTML 文档中， 下列选项中， 用于标记网页开始的标签是？ （ ）
A.
<br /> B.<br /> C.<br /> D.</p><p>标准答案： D</p><p> 8.步进电机 AccelStepper 类库的成员函数中， 成员函数 move() 功能描述正确的是？ （ ）<br /> A.设定步进电机运动到相对当前位置的脉冲数量<br /> B.设定步进电机运动到相对初始基准位置的脉冲数量<br /> C.启动步进电机恒速转动<br /> D.启动步进电机以设定的加速度和最大速度转动</p><p>标准答案： A</p><p> 9.下列选项中， HTTP 请求报文头部的结束符是？ （ ）<br /> A./r<br /> B./n<br /> C./r/n<br /> D./n/r</p><p>标准答案： C</p><p> 10.IPv4 地址的段数及长度分别是？ （ ）<br /> A.4 32<br /> B.4 128<br /> C.8 32<br /> D.8 128</p><p>标准答案： A</p><p><p>更多内容请查看网站：</p><p>网站链接</p><p>青少年软件编程历年真题模拟题实时更新</p><p></div><div class="em09 muted-3-color"><div><span>©</span> 版权声明</div><div class="posts-copyright">文章版权归作者所有，未经允许请勿转载。</div></div><div class="text-center theme-box muted-3-color box-body separator em09">THE END</div><div class="theme-box article-tags"><a class="but ml6 radius c-blue" title="查看更多分类文章" href="https://www.maxssl.com/article/"><i class="fa fa-folder-open-o" aria-hidden="true"></i>文章</a><br></div></div><div class="text-center muted-3-color box-body em09">喜欢就支持一下吧</div><div class="text-center 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