题目内容：
下列燃烧产物中属于不完全燃烧产物的有（ ）。
A．SO2 B．NH3
C．醇类
D．醛类
E．醚类
参考答案：
答案解析：
多选题：下列燃烧产物中属于不完全燃烧产物的有（ ）。
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- 题目类型：多选题
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B．NH3
C．醇类
D．醛类
E．醚类
B．NH3
C．醇类
D．醛类
E．醚类
如右图，BD=CD，AE：DE=1：2，延长BE交AC于F，且AF=5cm.则AC的长为（ ）.
如右图，BD=CD，AE：DE=1：2，延长BE交AC于F，且AF=5cm.则AC的长为（ ）.A．30cm B．25cm C．15cm D．10cm
设a>0，b>0，e是自然对数的底数（ ）．
设a>0，b>0，e是自然对数的底数（ ）．
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