：Taking YL-335B automatic assembly line of Yalong Company as the teaching carrier, students and enterprise employees are trained to master the mechanical installation and adjustment, circuit design and connection, equipment parameter field setting, human-machine interface configuration, control programming and debugging, and equipment troubleshooting ability from simple to complex, from single station to the whole line.（ ）A:错B:对答案: 对第二章 单元测试1、