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【简答题】
写出符合下列条件且分子式为 C 3 H 6 O 的化合物的结构式: (1)含有醛基;(2)含有酮基;(3)含有环和羟基;(4)醚; (5)环醚;(3)含有和羟基(和羟基不在同一碳上)
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参考答案：
举一反三
【单选题】Jenny Johnson was the first female pilot in human history.
A.
Right
B.
Wrong
C.
Not mentioned
查看完整题目与答案
【单选题】Some researchers admit that the first female secretary of state, the first female lead anchor of a nightly newscast, the first female president of Princeton, and, next month, the first female speaker ...
A.
Y
B.
N
C.
NG
查看完整题目与答案
【多选题】多层砌体结构房屋中设置圈梁的作用有（）。
A.
增加房屋结构的整体性
B.
提高墙体受压承载力
C.
减轻由于基础不均匀沉降引起的墙体开裂
D.
减轻地震产生的不利影响
E.
避免产生温度裂缝
查看完整题目与答案
【单选题】对下面的语句执行完后正确的说法是( )。 int c = 'c' / 3; System.out.println(c);
A.
输出结果为21
B.
输出结果为22
C.
输出结果为32
D.
输出结果为33
查看完整题目与答案
【单选题】What can be inferred from the example of the ant-lion in the first paragraph?
A.
Instincts of animals can lead to unreasonable reactions of animals in a strange situation.
B.
When it is engaged in a chain actions it cannot be interrupted.
C.
Environment and heredity are two supplementary factors in the evolution of insects.
D.
Along the lines of evolution heredity becomes less and environment more important.
查看完整题目与答案
【单选题】According to the passage, Sonia Gandhi is likely to be ______.
A.
India's first female Prime Minister
B.
India's fourth Prime Minister
C.
India's second female Prime Minister
D.
India's Prime Minister again
查看完整题目与答案
【单选题】In the first experiment, compared with male counterparts, female participants behave as______.
A.
negotiating with the hiring manager for a higher salary out of threat
B.
choosing more threat-related words like 'fear' or 'risk' after negotiation
C.
negotiating for the same salary whether with male or with female manager
D.
being more aggressive when negotiating with female hiring manager
查看完整题目与答案
【单选题】关于砌体结构中圈梁作用,下列叙述错误的是( )。
A.
加强结构整体性和空间刚度
B.
提高墙体的抗剪强度
C.
减轻地基不均匀沉降的影响
D.
增加房屋的高度
查看完整题目与答案
【单选题】______is the first novel written by female writers that observes individual problems and social relationships in the Victorian age.
A.
The Mill on the Floss
B.
Pride and Prejudice
C.
Jane Eyre
D.
Wuthering Heights
查看完整题目与答案
【多选题】在砌体结构中设置圈梁，它的作用是（）。
A.
提高楼盖的水平刚度
B.
增强纵横墙的连接，提高房屋的整体性
C.
减轻地基不均匀沉降对房屋的影响
D.
承担竖向荷载，减少墙体厚度
E.
减少墙体的自由强度，提高墙体的稳定性
查看完整题目与答案
相关题目：
【单选题】Jenny Johnson was the first female pilot in human history.
A.
Right
B.
Wrong
C.
Not mentioned
查看完整题目与答案
【单选题】Some researchers admit that the first female secretary of state, the first female lead anchor of a nightly newscast, the first female president of Princeton, and, next month, the first female speaker ...
A.
Y
B.
N
C.
NG
查看完整题目与答案
【多选题】多层砌体结构房屋中设置圈梁的作用有（）。
A.
增加房屋结构的整体性
B.
提高墙体受压承载力
C.
减轻由于基础不均匀沉降引起的墙体开裂
D.
减轻地震产生的不利影响
E.
避免产生温度裂缝
查看完整题目与答案
【单选题】对下面的语句执行完后正确的说法是( )。 int c = 'c' / 3; System.out.println(c);
A.
输出结果为21
B.
输出结果为22
C.
输出结果为32
D.
输出结果为33
查看完整题目与答案
【单选题】What can be inferred from the example of the ant-lion in the first paragraph?
A.
Instincts of animals can lead to unreasonable reactions of animals in a strange situation.
B.
When it is engaged in a chain actions it cannot be interrupted.
C.
Environment and heredity are two supplementary factors in the evolution of insects.
D.
Along the lines of evolution heredity becomes less and environment more important.
查看完整题目与答案
【单选题】According to the passage, Sonia Gandhi is likely to be ______.
A.
India's first female Prime Minister
B.
India's fourth Prime Minister
C.
India's second female Prime Minister
D.
India's Prime Minister again
查看完整题目与答案
【单选题】In the first experiment, compared with male counterparts, female participants behave as______.
A.
negotiating with the hiring manager for a higher salary out of threat
B.
choosing more threat-related words like 'fear' or 'risk' after negotiation
C.
negotiating for the same salary whether with male or with female manager
D.
being more aggressive when negotiating with female hiring manager
查看完整题目与答案
【单选题】关于砌体结构中圈梁作用,下列叙述错误的是( )。
A.
加强结构整体性和空间刚度
B.
提高墙体的抗剪强度
C.
减轻地基不均匀沉降的影响
D.
增加房屋的高度
查看完整题目与答案
【单选题】______is the first novel written by female writers that observes individual problems and social relationships in the Victorian age.
A.
The Mill on the Floss
B.
Pride and Prejudice
C.
Jane Eyre
D.
Wuthering Heights
查看完整题目与答案
【多选题】在砌体结构中设置圈梁，它的作用是（）。
A.
提高楼盖的水平刚度
B.
增强纵横墙的连接，提高房屋的整体性
C.
减轻地基不均匀沉降对房屋的影响
D.
承担竖向荷载，减少墙体厚度
E.
减少墙体的自由强度，提高墙体的稳定性
查看完整题目与答案
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