电机车架空线与巷道顶或棚梁之间的距离不得小于()A、1m B、0.5m C、0. 发布时间:2017-07-20 12:07 │ 来源:www.tikuol.com 题型:单项选择题 问题: 电机车架空线与巷道顶或棚梁之间的距离不得小于()A、1m B、0.5m C、0.2m
题型:单项选择题 5. I don't know what to_________at the university. I can't make any forecasts about my future.A.take inB.take overC.take offD.take up 查看答案