下面元素中属于角元素的是( )。
A: ,
B:
C: μ,γ
D: ,,
A: ,
B:
C: μ,γ
D: ,,
举一反三
- 下列是共轭酸碱对的有( )。 A: HCN,<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/6aec3656de5e43f2aac207f224124d37.png" /> B: HCN,<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/ffd97cd52f844953af34d4991d6c9c95.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/46f8b3d5a93446d78f44b38ee72d1120.png" /> D: HF,<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/059085cf7ba54f5d855b176195515ea5.png" /> E: HAc,<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/7a138c6b212a4f7f99e5af8147384030.png" />
- 矩阵<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/880363deee6b42bfa49ad16288f10309.png" />的Jordan标准形为 ( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/e751d71d146042418d4cf61c9ceb5978.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/d14f2641a5264f10ab7195978cf99c5f.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/37aad81cb46b4bcaa49af35dd1f23caf.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/7b7a8de2daa448339c85ae7956ab58ef.png" />
- 下列化合物中,属于芳香醇的是( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/bd968b6614554735b34bfc279c5d772c.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/6e41464b498a4c52b3f045647a129232.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/63bedd7ddf194421a3fbe2a4990ad80d.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/aa0a51c0dc7e44d7894063b3d84a7395.png" />
- 下列化合物中,不属于芳香杂环化合物的是( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/a024e8d480fb4118a97ea91ba159a3cf.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/72e704ca592d436fa897071fb9261b8d.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/7b7b51f20ff24a5798b3d77318b5d460.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/fb3c6ac56961413ea1eff2f9c8fad647.png" />
- 下列化合物中,能发生酰化反应的是( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/517de8a8f42942cf82859d6d49f675cf.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/6c8d89865ee24be78747d6fd25cd2d71.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/2483bc407db748cc96889b6112cbfb5c.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202109/cb06682ded43441d80d66a15e803c3b8.png" />