http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/f2ae0a6b086840de9b416590ffebf5bc.png

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">

化合物是对映异构体的为（ ）http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/6a5588e355f1405298b1f175cad54f95.png

有几中不同环境的氢（ ）http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/154115cc923a4e95a889ac29ed321318.png

有几中不同环境的氢（ ）http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/dc37b78bc8ed4b908a67b326b7368447.png

单烯烃经高锰酸钾氧化所得的产物 ， 分析其结构为（ ）http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/43ea3e608d5c4b8bb9105a71f84a9b57.png

下图作品主要运用了西方油画笔法中的那一种？http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/670d2a1e28c64f22a83fab67f0f02ba7.png

关于《包头巾的男人》这幅画的特点，以下表述最为恰当的是http://image.zhihuishu.com/testzhs/onlineexam/ueditor/201612/a874df85ecc843a08524b1780a6d7a8e.png

201612A Structure A Directions:Complete each one by deciding on the most appropriate word or words from the 4 choices marked A), B), C) and D). 1.Do you think the new engineer can help me ____ my operating skills?