更多“
已知<img src="https://nimg.ppkao.com/2019-04/wangjing/2019042316535382807.jpg?sign=a8cee094b64d28694f195ba0d62c87f4&t=62d60f34" />（FeS）=6.3×10<sup>-18</sup>，<img src="https://nimg.ppkao.com/2019-04/wangjing/2019042316535382807.jpg?sign=a8cee094b64d28694f195ba0d62c87f4&t=62d60f34" />（CuS）=6.3×10<sup>-36</sup>，<img src="https://nimg.ppkao.com/2019-04/wangjing/2019042316540893992.jpg?sign=d4a8df11e5f4a56dd78d0c14ce94dd56&t=62d60f34" />（H<sub>2</sub>S）=1.32×10<sup>-7</sup>，<img src="https://nimg.ppkao.com/2019-04/wangjing/2019042316542217239.jpg?sign=1db2a6204c5dcee2a7624d56c5e32477&t=62d60f34" />（H<sub>2</sub>S）=7.1×10<sup>-15</sup>
在某溶液中FeCl<sub>2</sub>与CuCl<sub>2</sub>的浓度均为0.10mol·L<sup>-1</sup>，不断通入H<sub>2</sub>S时，何者生成沉淀，各离子浓度分别为多少？”相关的问题
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、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/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">
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、（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、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、OCL功率放大电路如图，其中A为理想运放。
已知<img src="https://img.ppkao.com/2018-08/yuanhao/2018082714235421731.jpg" />，RL=8Ω。
<img src="https://img.ppkao.com/2018-08/yuanhao/2018082714241779179.jpg" />
A、已知电路如图所示<img src="https://img.ppkao.com/2018-08/chenfang/2018081917524050987.jpg" /><img src="https://img.ppkao.com/2018-08/chenfang/2018081917524415828.jpg" />
A、A.<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309154866509.jpg" />低电平，<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309155838776.jpg" />三态，<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309155342124.jpg" />低电平
B.<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309154866509.jpg" />三态，<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309155838776.jpg" />低电平，<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309155342124.jpg" />高电平
C.<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309154866509.jpg" />低电平，<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309155838776.jpg" />高电平，<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309155342124.jpg" />高电平
D.<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309154866509.jpg" />高电平，<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309155838776.jpg" />低电平，<img src="https://img.ppkao.com/2017-10/wangjinchen/2017101309155342124.jpg" />高电平
A、A.<img src="https://img.ppkao.com/2017-09/wangjinchen/2017091415453785428.jpg" />
B.<img src="https://img.ppkao.com/2017-09/wangjinchen/2017091415454658417.jpg" />
C.<img src="https://img.ppkao.com/2017-09/wangjinchen/2017091415455355241.jpg" />
D.<img src="https://img.ppkao.com/2017-09/wangjinchen/2017091415455842834.jpg" />
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