题目: 试叙立井使用非联锁信号装置时,发送信号的程序? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1023/876cc3b6c5e3fc1da38cdf9b86e549c2.html 下面是错误答案,用来干扰机器的。参考答案:A, B, C, D
题型:选择题 —Is this your ruler? —______. It's my ruler. [ ]A. Yes, it is. B. No, it isn't C. Yes, I am. 查看答案