参数估计的置信度为
的置信区间表示（）
A: 以
的可能性包含了未知总体参数真值的区间
B: 以
的可能性包含了未知总体参数真值的区间
C: 总体参数取值的变动范围
D: 抽样误差的最大可能范围
E: 样本统计量以的可能性被该区间包含
的置信区间表示（）A: 以
的可能性包含了未知总体参数真值的区间B: 以
的可能性包含了未知总体参数真值的区间C: 总体参数取值的变动范围
D: 抽样误差的最大可能范围
E: 样本统计量以
的可能性被该区间包含
举一反三
- 图示电路的戴维南等效电路的参数是：()<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/f5d7aa3fc999448ea403bd5116ee008d.png" > A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/777f5a9976174ad7a9e01b3c5734899e.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/1a62711e7171419084181651c195d6f7.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/1138bdbe38b645749caa3f5c7c1e5e8d.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/37958a932ee34853b15f8bb9c495cf32.png" >
- 对于下列已达平衡的反应体系，若压缩容器体积，增加体系总压力，平衡正向移动的是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/326095eaba6d40a3bc4057c25f7eae82.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/d5573e1b78574bdf970effa5e9509ef4.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/c8f59ca38f9a41db94d913281b203ada.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/41aeceac712749ada229b477082c26aa.png" /> <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/d5573e1b78574bdf970effa5e9509ef4.png" /> <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/0084729e370b40eab5afb29706560d04.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/f92df5cfb06d4322aca5548a0937215a.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/d5573e1b78574bdf970effa5e9509ef4.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/8fd7733b85054932be29f9c24c10f538.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/bfdf951768ce48989962f5ffbf5b8a97.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/d5573e1b78574bdf970effa5e9509ef4.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/6661619fa794442781036239c942bac3.png" />
- 函数<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/80d8f8a04b644504a6d2e40a33d0eb32.png" >的<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/4b92518ac6a14134a358c16900e875c0.png" >阶麦克劳林公式为（） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/7c2994f9242c43379c6a106d5bd92658.png" >； B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/2145f14f27224b189e702d3390e0a9ba.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/9ef01b77e76241d9b67b1c7c8cd0eea1.png" >； D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/a0feec59ac5046839ecb5324b27717e0.png" >；
- 正确的三视图是（） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/c79f2d3b8b124d6bb11333e89314a924.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/da6b6dd5a32947f3825ccbbb9b0fb0c5.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/307f865d705d43f39bcd26e3ccc6dad7.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/e8dafd24df684f4a8223d230ce78a2b8.png" >
- 两个平行的“无限大”均匀带电平面,其电荷面密度分别为+σ和+2σ,如图所示,则A、B二个区域的电场强度分别为（设水平向右为正方向）：()<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/78e393cd69774cd39a6b01baab32e20c.png" > A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/3df0f391d8d744bd98dc43b9717002d4.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/f87c5783dc7b4f5d98e57cd626b5c95b.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/9b859042c4284348a9524474ad08eafd.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/61f01893798a4d17965826ac6341e587.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/8b8f9aea022c4e6ca7ac133abc21c16a.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/6fd6170aa1f9495c8e27a96b368c374a.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/8c0c545adfb54d5d88cfa429928d1302.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/17de9a98804d4ec09e06a5f8bce2f890.png" >