Keller“折叠链模型”

1、Keller-Kiliani反应是常用于2-去氧糖产生的反应，该反应阴性，则

Keller-Kiliani反应是常用于2-去氧糖产生的反应，该反应阴性，则证明分子结构中无2-去氧糖。（）A正确B错误

2、Passage FiveHelen Keller was born a he

Passage FiveHelen Keller was born a healthy normal child in Alabama in 1880. However, an illness with a high fever struck her when she was s...

3、Keller-Kiliani反应使用

Keller-Kiliani反应使用A三氯化锑的氯仿溶液B碱性酒石酸铜试液C三氯化铝冰醋酸溶液D硫酸铜试液E三氯化铁冰醋酸溶液

4、能发生Keller-Kiliani反应的为（）

能发生Keller-Kiliani反应的为（）A萜类B香豆素C西地兰D甾体E黄酮

5、What was Helen Keller like when Miss S

What was Helen Keller like when Miss Sullivan met her?A She was quiet and shy.B She was bright and friendly.C She was weak from illness.D She was uncontrollable.

6、Keller-Kilialu反应呈阴性，呫吨氢醇反应呈阳性的化合物是（）

Keller-Kilialu反应呈阴性，呫吨氢醇反应呈阳性的化合物是（）AA.洋地黄毒苷BB.羟基洋地黄毒苷CC.甘草酸DD.K-毒毛旋花子苷EE.芦丁