线路允许速度ν≤120km/h时,曲线半径R>350m时,线路轨距最大静态值为()。
A、1438mm
B、1441mm
C、1445mm
D、1448mm
参考答案:B
有药水30.3千克,其中药和水的比是1:100,药水中含药______千克,含水______千克.
The mistake I made last week has been a timely reminder of the need for ________ care.[ ]
A. equal
B. constant
C. accurate
D. clear