一直铁道线旁沿线每隔50m等间距竖立着电线杆，测得列车依次经过1

一直铁道线旁沿线每隔50m等间距竖立着电线杆，测得列车依次经过1、22、25、30、42、90号电线杆所用的时间分别为8.80s、8.76s、8.85s、8.76s、8.80s、8.80s，则列车

A．肯定做匀速直线运动

B．肯定做变速直线运动

C．可能做匀速直线运动

D．可能做变速直线运动

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