区间信号电源屏,区间轨道、站内电码化输出电压为直流()。A、22V~25V B、23 发布时间:2017-07-06 16:39 │ 来源:www.tikuol.com 题型:单项选择题 问题: 区间信号电源屏,区间轨道、站内电码化输出电压为直流()。A、22V~25VB、23V~27VC、23.5V~27.5VD、24V~28V
题型:单项选择题 根据汉语提示完成句字。1. In spring, the weather gets warm and everything ________ ________ ________ ________ (苏醒) in March.2. It's cold in winter. We can ________ ________ (堆雪人) in winter. 3. There are many ________ ________ ________ (名胜) in Beijing. 4. People watch the lantern show and guess ________ (灯谜). 查看答案