• 2022-06-16
    下列最稳定的自由基是( )。
    A:
    B:
    C:
    D:
  • B
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    • 0

      下列化合物中,有顺反异构的是( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/4caea8e88bac45b48d41bb2b16eacd0d.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/51411268d61c4efeb122a51094211c7c.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/3dc98c0e8e694c4a8c7b75033743aec1.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a2f358ca8faa4ba5904624989c0ca9b7.png" />

    • 1

      下列溶剂中极性最强的是 ( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a257a09d18584b7d891be82974382a4d.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/ff05f4fccc104533957a7f11b71fde6f.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/256725b392254c429c521b1f1d2740aa.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/b5dbd908ec2048eab29a32a26598fde3.png" />

    • 2

      下列函数表达中,( )是周期信号( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/fa28c4df306a4768855eadcf32f77987.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/7a1a43bddcbc4b438f49428cef75ea64.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/5b67d7d31dd34862904bc3d9086668ed.jpg" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/377afdab17404edf84b525cd9e974df1.png" />

    • 3

      反-1,4-二甲基环己烷的最稳定构象是( )? A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f1aa5a200d544a578720ba78141124b8.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/81058c0c32dc4e1f810a5485068e3fc2.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/122b3d7632ff4183845cf13510668f46.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e936ca83e4504eb69e9524b8f5e667d6.png" />

    • 4

      下列哪些模板可用于图像锐化?( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f0462578b67a4958b63a36ee38d41bce.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/b58edf54767842408a9b4d5e8d9ef230.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/13b381992b7f4fdb8b79ab32b879c121.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e915aa28bbd54e38b76311ed86333ad1.png" />