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【简答题】

Fill in the blanks with words and phrases below. Change the form where necessary. donate bring to mind endeavor emerge feature interpret enroll in generate ensure in case of 1. Most digital products today from the development process like a creature emerging from a bubbling tank. 2. Many people are at a loss as to what to do a real fire. 3. China's west development has provided numerous opportunities. 4. In reading, we consciously scan the individual words and their meaning in context. 5. Using the wind to electricity dates back to 1890. 6. Fill out a questionnaire and provide a blood sample, and you can your DNA for genetic- disease research. 7) You must that, in particular, users can easily tell which items are selected. 8) Fins (鱼鳍) are a________ specific to fish. 9) Students with less academic goals may__________ vocational schools or community colleges. 10)The painting _______ some of Picasso's early work.

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参考答案:
举一反三

【单选题】下列蒽醌类化合物中,酸性最强的是

A.
1-羟基蒽醌
B.
2-羟基蒽醌
C.
1,2-二羟基蒽醌
D.
1,3-二羟基蒽醌
E.
2,3-二羟基蒽醌

【单选题】下列化合物中,酸性最强的是;

A.
α-羟基蒽醌
B.
1,5-二羟基蒽醌
C.
2,6-二羟基蒽醌
D.
β-羟基蒽醌
E.
1,2-二羟基蒽醌

【单选题】羟基蒽醌中,酸性最强的是:

A.
1-羟基蒽醌
B.
2-羟基蒽醌
C.
1,2-二羟基蒽醌
D.
3,6-二羟基蒽醌

【单选题】下列化合物中,酸性最强的是

A.
α-羟基蒽醌
B.
1,5-二羟基蒽醌
C.
2,6-二羟基蒽醌
D.
α-羟基蒽
E.
1,2-二羟基蒽醌
相关题目:
【单选题】下列蒽醌类化合物中,酸性最强的是
A.
1-羟基蒽醌
B.
2-羟基蒽醌
C.
1,2-二羟基蒽醌
D.
1,3-二羟基蒽醌
E.
2,3-二羟基蒽醌
【单选题】下列化合物中,酸性最强的是;
A.
α-羟基蒽醌
B.
1,5-二羟基蒽醌
C.
2,6-二羟基蒽醌
D.
β-羟基蒽醌
E.
1,2-二羟基蒽醌
【单选题】羟基蒽醌中,酸性最强的是:
A.
1-羟基蒽醌
B.
2-羟基蒽醌
C.
1,2-二羟基蒽醌
D.
3,6-二羟基蒽醌
【单选题】下列化合物中,酸性最强的是
A.
α-羟基蒽醌
B.
1,5-二羟基蒽醌
C.
2,6-二羟基蒽醌
D.
α-羟基蒽
E.
1,2-二羟基蒽醌
【单选题】程序流程图中表示分支的图形是
A.
矩形
B.
平行四边形
C.
圆角矩形
D.
菱形
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