搜题

问题更新时间2024/4/17 11:29:00

挡水面积为A的平面闸门,一侧挡水,若绕通过其形心C的水平轴任转α角,其静水总压力的大小方向是否变化( )
·都不变
·都变化
·大小变化,方向不变
·大小不变,方向变化

答案

单选题
·大小不变,方向变化

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