[音频]
A. The woman went out with her car key.
B. The woman lost her car key in the morning.
C. John went out in his car.
D. Johntookthekey.
直流24V电源的正负端分别按照触摸屏电源接口标识进行连接,不可反接,否则无法工作。
A. 对
B. 错
触摸屏与PC的通信参数设置,PC通讯口所选择的串口必须与实际设置一致,否则无法通信。
A. 对
B. 错
触摸屏与PC的通信参数设置,波特率必须和PLC一致,不得大于187500。
A. 对
B. 错