铁路轨距变化应和缓平顺，允许速度不大于120km/h的其他站线，轨_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

铁路轨距变化应和缓平顺，允许速度不大于120km/h的其他站线，轨距变化率不得大于（）（不含规定的递减率）。

A.1‰

B.2‰

C.3‰

D.4‰

答案

参考答案：C

选择题

____________ people went to the concert which was held in People’s Square the night of May Day.

A．Three thousand, in

B．Thousands, on

C．Many thousand, in

D．Thousands of, on

单项选择题

2，3，4，9，32，( )

A．47
B．83
C．128
D．279