题目用4m×1m的矩形闸门垂直挡水,水压力对闸门底部门轴的力矩等于A. 104.53kN.mB. 156.8kN.mC. 249.24kN.mD. 627.2kN.m用4m×1m的矩形闸门垂直挡水,水压力对闸门底部门轴的力矩等于A. 104.53kN.mB. 156.8kN.mC. 249.24kN.mD. 627.2kN.m题目解答答案A. 104.53kN.m