更多“ 已知均质岩坡的<img src="https://nimg.ppkao.com/2018-07/yuanhao/2018072017433220750.jpg?sign=49dd5027866b40efe6c122b89e0b9e6e&t=62d21c43" />，问当岩坡高度为200m时，坡角应当采用多少度？”相关的问题
A、已知地面下有一层4米厚的粘土，天然孔隙比<img src="https://img.ppkao.com/2018-07/yuanhao/2018072017082920193.jpg"/>，若地面施加<img src="https://img.ppkao.com/2018-07/yuanhao/2018072017083383481.jpg"/>的无限均布荷载，沉降稳定后，测得土的孔隙比为1.12，求粘土层的沉降？
A、已知，<img src="https://img.ppkao.com/2019-05/liuye/2019051616504321415.jpg" />试证此时复能量定理为
<img src="https://img.ppkao.com/2019-05/liuye/2019051616510927939.jpg" />
A、A.<img src="https://img.ppkao.com/2018-04/zhouyun/2018041117140637692.jpg" />
B.<img src="https://img.ppkao.com/2018-04/zhouyun/201804111714091678.jpg" />
C.<img src="https://img.ppkao.com/2018-04/zhouyun/2018041117141476512.jpg" />
D.<img src="https://img.ppkao.com/2018-04/zhouyun/2018041117142045280.jpg" />
E.<img src="https://img.ppkao.com/2018-04/zhouyun/2018041117142344778.jpg" />
A、（1）设总体<img src="https://img.ppkao.com/2019-04/wuacheng/2019041516401032807.jpg" />参数σ2已知<img src="https://img.ppkao.com/2019-04/wuacheng/2019041516404264804.jpg" />是来自X一个样本值。求μ的最大似然估计值。
（2）设总体<img src="https://img.ppkao.com/2019-04/wuacheng/2019041516410433618.jpg" />参数μ已知<img src="https://img.ppkao.com/2019-04/wuacheng/2019041516412861381.jpg" />为一相应的样本值。求σ2的最大似然估计值。
A、估算150℃时乙硫醇的液体摩尔体积。已知实验值为<img src="https://img.ppkao.com/2019-04/wuacheng/2019042316381735263.jpg" />乙硫醇的物性为<img src="https://img.ppkao.com/2019-04/wuacheng/2019042316383535802.jpg" />的饱和液体密度为<img src="https://img.ppkao.com/2019-04/wuacheng/201904231638507400.jpg" />
A、A.AB
B.<img src="https://img.ppkao.com/2019-04/wangjue/2019041612322333927.jpg" />
C.<img src="https://img.ppkao.com/2019-04/wangjue/201904161232269440.jpg" />
D.AB+C
A、
A． <img src="https://img.ppkao.com/2018-04/ppkaocom/20184110500093258.jpg">
B． <img src="https://img.ppkao.com/2018-04/ppkaocom/20184119389626844.jpg">
C． <img src="https://img.ppkao.com/2018-04/ppkaocom/20184119252781493.jpg">
D． <img src="https://img.ppkao.com/2018-04/ppkaocom/20184114112499863.jpg">
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