#单元测试五 <quiz> <question> <p>1.[单选](2分)Gazebo是一款什么工具?</p> <answer>A.调试</answer> <answer>B.可视化</answer> <answer correct>C.仿真</answer> <answer>D.命令行</answer> <explanation>你选对了!</explanation> </question> </quiz> <quiz> <question> <p>2.[单选](2分)rqt_graph可以用来查看计算图，以下说法错误的是：</p> <answer>A.计算图反映了节点之间消息的流向</answer> <answer>B.rqt_graph中的椭圆代表节点</answer> <answer correct>C.rqt_graph可以看到所有的topic、service和action</answer> <answer>D.计算图反映了所有运行的节点</answer> <explanation>你选对了!</explanation> </question> </quiz> <quiz> <question> <p>3.[单选](2分)rosbag的描述错误的是：</p> <answer correct>A.rosbag可以记录和回放service</answer> <answer>B.rosbag可以记录和回放topic</answer> <answer>C.rosbag记录的结果为.bag文件</answer> <answer>D.rosbag可以指定记录某一个或多个topic</answer> <explanation>你选对了!</explanation> </question> </quiz> <quiz> <question multiple> <p>4.[多选](5分)RViz可以图形化显示哪些类型的数据？</p> <answer correct>A.激光 LaserScan</answer> <answer correct>B.点云 PointCloud</answer> <answer correct>C.机器人模型 RobotModel</answer> <answer correct>D.轨迹 Path</answer> <explanation> 以上类型数据RViz均可以图形化显示</explanation> </question> </quiz>