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">

下图属于西方绘画中哪种常见的笔法？（ ）http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201610/9717272958a4476abc1c98b0fbbdb676.png

下图是书法中哪种字体？http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201610/e7df56e1564d43d9921ae176c35de5e5.png

http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201703/a3957c51db1e470dadc8f3cd0cb1d1b1.png

http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201703/ccee0772c2564b8d8213ff6858884a9b.png