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【判断题】
胺四乙酸二钠( EDTA-2Na )作为一种防腐剂,其主要作用是能螯合溶液中能促进氧化作用的微量金属元素。
A.
正确
B.
错误
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【单选题】‘Hidden’ Species May Be Surprisingly Common Cryptic species—animals that appear identical but are genetically quite distant—may be much more widespread than previously thought. The findings could have...
A.
The results of the research can help the development of many other research areas.
B.
The results of the research can help the development of biodiversity estimates.
C.
The results of the research can help our understanding of infectious disease evolution.
D.
The results of the research can help our understanding of“survival of the fittest.”
【简答题】苷类酸催化水解的条件?特点?主要水解产物?
【单选题】脂类水解的产物是()。
A.
氨基酸和水
B.
氨基酸和葡萄糖
C.
甘油和脂肪酸
D.
甘油和葡萄糖
【判断题】一个分子中,最少要有一个σ键。
A.
正确
B.
错误
【简答题】单脂类水解后产生的产物包括 和 ;合脂类的水解产物除了上述两种外,还包括 。
【单选题】Thanks for the advice, but this is something I have to ______ out myself.
A.
fulfill
B.
identify
C.
figure
D.
claim
【简答题】She learned how to ______medicinal herbs from a traditional Chinese doctor. A) identify B)modify C) facilitate D)qualify
【多选题】按照脂类水解产物多少可以分为 [填空(1)] 、 [填空(2)] 以及 [填空(3)]
A.
简单脂
B.
复合脂
C.
衍生脂
【单选题】In Paragraph 1, the author explains the concept of the greenhouse effect by______.
A.
identifying different causes of global warming
B.
comparing the scientific concept to a familiar human experience
C.
arguing that the greenhouse effect results in global warming
D.
describing how the greenhouse effect is formed
【简答题】脂类水解(名词解释)
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