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: <img src="http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/0764b13699dc4c17a1bc32c416c80c79.png"> B: <img src="http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/5f83da41956140e2a22d5b7ecaeaffa4.png"> C: <img src="http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/a06e111495c04b2aa8030d72e8c63c9c.png"> D: <img src="http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/5179d4f1dec64a9181e72b2f19c98115.png">

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