【判断题】当偏心距小到在设计中可忽略不计时,则可近似按轴心受压柱计算。
【单选题】Read the following situation and choose the appropriate answer. Situation: An American invited a group of Japanese students over to his house. He and his wife had spent a great deal of time preparing ...
A.
The Americans must have done something that offended the Japanese.
B.
The Japanese were not having a good time.
C.
Japanese usually leave as a group and try not to stay too long So as not to offend their host.
【单选题】关于轨距以下说法正确的是( )。
B.
地铁选用轨距为1435毫米,轻轨选用轨距为1400毫米
C.
地铁选用轨距为1400毫米,轻轨选用轨距为1435毫米
【多选题】关于接触轨,下列说法正确的是()。
B.
整体绝缘支架纵向轴线垂直于线路中心线,横向轴线平行于线路中心线
C.
接触轨钢带的连接应平滑顺畅、无阶梯,其不平顺度应控制在0.5mm范围之内,复合轨的连接缝隙应密贴
D.
膨胀接头用以自动调整接触轨的因温度引起的膨胀伸缩,防止由于温度变化产生的纵向应力作用于接触轨支撑件上
【单选题】He seemed to be of deciding anything for himseif.
【多选题】以下关于看道检查轨距的说法正确的是( )。
【简答题】Read the following situation and explain the questions. Situation: An American invited a group of Japanese students over to his house. He and his wife had spent a great deal of time preparing food and...
【单选题】关于地铁与轻轨,以下说法正确的是( )。
【多选题】下面关于轨距的说法,正确的有
A.
轨距是指钢轨顶面下16mm范围内两股钢轨中心线之间的最小距离。
【单选题】砂的含泥量是指天然砂中粒径小于()μm的颗粒含量。