游泳运动员以恒定的速率垂直河岸横渡,当水速突然增大时,对运

 游泳运动员以恒定的速率垂直河岸横渡,当水速突然增大时,对运动员横渡经历的路程、时间发生的影响是(  )

A.路程增加、时间增加      B.路程增加、时间缩短

C.路程增加、时间不变      D.路程、时间均与水速无关

 

答案

 C

 

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