(08海南)假设水上通道救灾时,将载有“门桥”预件的车辆快速倒

(08海南)假设水上通道救灾时,将载有“门桥”预件的车辆快速倒车并急剃车,“门桥”便自动滑落江中;门桥没有桥墩,也没有吊索,能让运载救灾物资的车辆通过。其中主要应用的物理知识是:

  A.惯性浮力    B.推力浮力   C.推力重力    D.惯性重力

答案

A

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