突然发现接触网故障,发现人员的手信号是如何规定的? 发布时间:2021-02-14 23:38 │ 来源:www.tikuol.com 题型:问答题 简答题 问题: 突然发现接触网故障,发现人员的手信号是如何规定的?
题型:问答题 简答题 The expert’s suggestion is that the villagers in Yunnan Province should have __________ to fresh and clean water as soon as possible.A.entryB.pathC.approachD.access 查看答案