某氧化还原反应组成原电池，测得电动势大于零，这意味着
A:
B:
C:
D:
A:
B:
C:
D:
举一反三
- 下列化合物中，键角最大的是 A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/7d5e45fcea124c1ca0e2cac609646c36.png" /> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/34afa0e9237b41cebe5c997fb73f6719.png" /> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/bcf0c0d02f2e426189557d62c2177db4.png" /> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/3e6a04eb0baa41d285d1eebf96aa9965.png" />
- 根据下列反应设计电池，不需要用惰性电极的反应是 A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/897e1d72498f470b8c5885ee0e720b1f.png" /> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/fafdd77754b44ecaa9fd2e7db769cd76.png" /> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/d912936dc59f418ea0ee110a38c3c810.png" /> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/aa5cafee6955470cb884c2f812fd52e4.png" />
- 下列分子或离子中键角最小的是 A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/68d06a2f59344caaa4ca7366abce5f7b.png" /> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/28e2378437dd4675becb80d8df90c126.png" /> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/815898a63941430dbd7304f9e6ea5c6f.png" /> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/1e23f153d4664e689c4b4022807a02c0.png" />
- 下列各组混合液中，能作为缓冲溶液的是 A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/1e10f2f1a431462e88222763d65640a3.png" /> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/b52056f8df09413c8489eb141f56de09.png" /> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/3164abf6e70844aab1f60efd9e7f2908.png" /> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/d4368e897b7f4a7080eb2533804d3487.png" />
- 已知某电路的真值表如下，该电路的逻辑表达式为( )。 A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/36accdb472c940ddb6fbcc2d555fb6fb.png" /> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/5345f979d09b4b34b67c9e440da36f19.png" /> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/688a1770f5c04a96bda5c83d9479bf1b.png" /> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202109/6f6355c7837b43d99655382e3202b83a.png" />