如果圆筒形容器发生爆裂,那么裂口() ["A、沿环向裂开","B、受力情况复杂无法确定","C、沿纵向裂开","D、倾斜裂开"]
军事运输后付运费、铁路大客户的运杂费集中在()结算。 ["铁道部","铁路局","到站","发站"]
设置位置区的周期更新时间的定时器是() ["T3121","T321","T2312","T3212"]
UpPCH配置在上行业务时隙时,上行同步码将被发送()次。 ["1","2","3","4"]
可倾瓦装配时,支承瓦块的球头螺钉必须与瓦块的球形坑相互配研,使接触面积达到() ["A、50%~60%","B、60%~70%","C、70%~80%","D、80%~90%"]
道岔区轨枕埋入式无砟轨道道床结构有哪几部分组成?