A:
![](https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/0cce507119d9434e9628371a199c6559.png)
B: pH = 7
C: pH+pOH = 14
D: pOH = 7
举一反三
- 水溶液呈中性是指() A: pH=7 B: [H]=[OH] C: pH+pOH=14 D: pOH=7
- 水溶液呈中性是指( )。 未知类型:{'options': ['', 'pH = 7', 'pH+pOH = 14', 'pOH = 7'], 'type': 102}
- 中性水溶液是指() A: pH=7 B: [H+]=[OH-] C: pH+pOH=14 D: pOH=7
- c(NaCl) = 0.1mol/L的NaCl水溶液的质子平衡式是( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/9b7be57053c646c5aa738c0535f65770.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/b1382afa5c5d4951aef3b50dec2d582d.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/1887e7216893436fb1e402c407d2ffaa.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/c2d7158b33f44091a8b75598cbb3245d.png" />
- 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" />
内容
- 0
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" />
- 1
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- 2
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- 3
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/doctrans/docx2html/202107/148a41df9c6547e486d1ca0e1e099f51.png" />= 0,E ≠0 B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/148a41df9c6547e486d1ca0e1e099f51.png" />= 0,E = 0 C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/148a41df9c6547e486d1ca0e1e099f51.png" />≠0,E = 0 D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/148a41df9c6547e486d1ca0e1e099f51.png" />≠0,E ≠0
- 4
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