两个半电池，电极相同，电解质溶液中的物质也相同，都可以进行电极反应，但溶液的浓度不同，它们组成电池的电动势（ ）。
A:
= 0，E ≠0
B:= 0，E = 0
C:≠0，E = 0
D:≠0，E ≠0
A:
= 0，E ≠0B:
= 0，E = 0C:
≠0，E = 0D:
≠0，E ≠0
举一反三
- 已知<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/3b751d3b25514bec876427af5c1e59c1.png" />的z变换<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/6cd80d63c25f40f3930413d470be6bf3.png" />，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/44a7b63737404bcfab64da5ae36635f0.png" />的收敛域为（ ）时是因果序列。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/5ef40bb06be14e9099b67ab2070ee216.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/293e604c21c54aff8f2f0bb128871ad7.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/f8db782ebecd4e808769625106929a3f.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/67575d32d53542f9926a431d42780f0f.png" />
- 两个半电池，电极相同，电解质溶液中的物质也相同，都可以进行电极反应，但溶液的浓度不同，它们组成电池的电动势（ ）。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/f2f01c0309534cb38bde4ef3b901fac0.png" />=0，E≠0 B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/5a59bbfbb5b24a67b2169ff0c6d5eba5.png" />≠0，E=0 C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/e545155d24d1463f8c514df5d3ade474.png" />≠0，E≠0 D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/3f58796eb6e845fca09f6a16272e0b23.png" />=0，E=0
- 通过点<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/a13927df1bf542dfa036a32b10364f69.png" />的拉格朗日插值基函数<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/65695a42c7a14b649b6aa4fb68f7e499.png" />满足( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/99af333f3e934ef6a75022ee1e728b53.png" />＝1，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/7769611ac5cd4c93975be7c41a49ae71.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/99af333f3e934ef6a75022ee1e728b53.png" />＝1，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/7769611ac5cd4c93975be7c41a49ae71.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/99af333f3e934ef6a75022ee1e728b53.png" />＝0，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/7769611ac5cd4c93975be7c41a49ae71.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/99af333f3e934ef6a75022ee1e728b53.png" />=0，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/f80e8e400f3f4916bcaf6b5fde757f16.png" />
- 下面哪些是统计量?( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/aa3c36f70a0c4b358e1e7bd04a5ca8af.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/fd47f763bd6549458e047323a31d160b.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/32739351c39446ca895b45108dbf1744.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/56142fe4e370488fa439dde57d347fe9.png" />
- 用户的密码信息保存在（ ）文件中 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/837734aa1d6c460aa86e32dcb50f6d1f.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/169bc5f6db044ca2aea8a23243ae708a.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/661c329523dd415489b340ba155d3acc.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/a7d915e53a1647179a02b51fa979282a.png" />