Friday, September 16, 2022
Wednesday, September 21, 2022
Monday, September 19, 2022
问题:单机返岔子或机车出入段时,司机可根据()显示的道岔开通信号或调车信号机显示进行的信号动车。...
Thursday, September 22, 2022
问题:数字频率调制又称频移键控(FSK),它的基本原理是利用载波振荡的频率变化来传递数字信息。...
Tuesday, September 20, 2022
Wednesday, September 14, 2022
Thursday, September 15, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
问题:车辆中,空气制动的截断塞门若为关闭位置,则此车为“()”。...
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
问题:有关电气化区段线路与接触网维修的补充规定描述正确的是()...
Thursday, September 22, 2022
问题:计算某一地区修建地方铁路,钢轨选用25m标准轨,轨枕选用混凝土枕。在一般地段,要求每千米轨枕数为1600根。现有一长11...
Thursday, September 22, 2022
Friday, November 18, 2022
Thursday, September 22, 2022
问题:深圳地铁规定列车停站时间有屏蔽门的车站一般不少于20s,客流较大的车站可放宽至()。...
Thursday, September 22, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:多选题“三品”是指()A人品B产品C消费品D抵押品...
Tuesday, December 19, 2023