某化合物的红外光谱在1700cm–1处有强吸收可能有的官能团为( )
A:
B:
C:
D:
A:
B:
C:
D:
举一反三
- 下面是轴测图的是( )。 A: <img src="http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201702/748c4269a50a4aa2bfab8b91fd4f0a48.png" /> B: <img src="http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201702/fd1616f4949a4f5dbe2d263f38f5bbf6.png" /> C: <img src="http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201702/d6dae74b734542a99835980a703c3222.png" /> D: <img src="http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201702/9c9af01bbf134f52be1439f428bb093a.png" />
- http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/f2ae0a6b086840de9b416590ffebf5bc.png
- <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/2205d9f03e724a04b34f2f1045309079.png" />的幅频响应是,幅频响应是。 A: 1,<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/760d7fcc2f264ed1b10fb836cb48f565.png" /> B: -1,<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/21f685d2962e4b6993bfcaa513bdbf68.png" /> C: 2,<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/57267e995f86426899ce3cc0177a2343.png" /> D: 1,<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/ea8ba62853a94a15a5620c5165e3594a.png" />
- 化合物是对映异构体的为( )http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/6a5588e355f1405298b1f175cad54f95.png
- 若x2+y2=1,则dy为( ) A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/d045b5f235a54083ab91e6f717cf00d8.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/74173c5355234874ab8cb9275865d5d6.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/bbfb37ba58fc4de0aa8688e0bb53cef5.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/f9a206c25e8c4ea1bd7b51519afd76b7.png" />