问题
填空题
200km/h≥线路允许速度Vmax≥250km/h正线上,根据《高速铁路无砟轨道线路修理规则》规定,道岔静态几何尺寸容许偏差管理值中,扭曲(mm/m3)的经常保养标准为()mm。
答案
参考答案:4
200km/h≥线路允许速度Vmax≥250km/h正线上,根据《高速铁路无砟轨道线路修理规则》规定,道岔静态几何尺寸容许偏差管理值中,扭曲(mm/m3)的经常保养标准为()mm。
参考答案:4
根据对话情景选择恰当的选项,其中有两项是多余的。 | |
Jim: No. What's happening? Peter: 2______ Many people were hurt. Jim: That's terrible! 3______ Peter: I think we should go to the traffic station to learn more traffic rules. Jim: Me, too. 4______ Peter: By bike. Jim: 5______ It can help us avoid air pollution and it's easy to park, too. |