挑战习题
1/5单选题
难度:

1.关于乙醇的说法正确的是
A 乙醇可在空气中燃烧
B 乙醇存在于淀粉中
C 工业乙醇可用来配制饮用酒
D 乙醇是食醋的主要成分
提示1:
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正确答案:QQ==
5LmZ6YaH5Y+v5Lul5Zyo56m65rCU5Lit54eD54On77yMQemhueato+ehru+8mzxicj7kuZnphoflubbkuI3lrZjlnKjkuo7mt4DnsonkuK3vvIzmt4DnsonlsZ7kuo7ns5bnsbvnianotKjvvIzkuZ/lsLHmmK/phpvjgIJC6aG56ZSZ6K+v77ybPGJyPuW3peS4muS5memGh+eUseS6juWug+eahOWItuWkh+aWueazleS4jeWQjO+8jOS8muWQq+acieWkp+mHj+WFtuS7luadgui0qO+8jOWboOatpOS4jeiDveeUqOadpemFjeWItumlrueUqOmFku+8jEPpobnplJnor6/vvJs8YnI+5LmZ6YW45piv6aOf6YaL55qE5Li76KaB5oiQ5YiG44CCROmhuemUmeivr++8mzxicj7nu7zkuIrvvIzpgInmi6lB6aG544CC