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【简答题】
（6分）右图是常见固体物质的溶解度曲线，根据图示回答： （1）曲线上M点表示 ，t 3 ℃时，A、B、C三种物质的溶解度由大到小的顺序为 。 （2）t 1 ℃时，将10g A物质放入100g水中，充分溶解后所得的溶液是 （填“饱和”或“不饱和”）溶液。欲使t 2 ℃时C物质的饱和溶液变为不饱和溶液，可采取的方法是 （一种方法）。 （3）现有30℃的不饱和KNO 3 溶液，与该溶液有有： ①水的质量    ②溶液中KNO 3 的质量    ③KNO 3 的质量分数 ④30℃时KNO 3 的溶解度    ⑤溶液的质量 Ⅰ．在该不饱和溶液中加硝酸钾至饱和，不变的量有 (填序号，下同)。 Ⅱ．将该不饱和溶液恒温蒸发至饱和，不变的量有 。
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参考答案：
举一反三
【单选题】According to the woman, the war memorial is ___________.
A.
easy to find
B.
impossible to notice
C.
a little difficult to see
D.
o
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【单选题】According to the passage, what might be a barrier to marriage in 2050 ?
A.
Age and education.
B.
Influence from the outside world.
C.
Practice of non-marriage.
D.
Financial independence.
查看完整题目与答案
【简答题】输入假说属于 ,不属于第二语言教学理论研究
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【判断题】( ) 3.According to Professor Zog, there is no life on Earth.
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the speaker, why are the humanities important?
A.
They provide us with facts, truth and objectivity.
B.
They provide us with social workers, teachers and artists.
C.
They provide us with many things that we never thought of before.
D.
They provide us with the ability to help others in our local community.
查看完整题目与答案
【单选题】According to family members, Boeing is mainly concerned with:
A.
Profits
B.
Safty
C.
Lawsuits
D.
Compensation
查看完整题目与答案
【判断题】类体中private修饰的变量在本类中能访问，类生成的对象也能访问。
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the conversation, which statement is true?
A.
The number of city dwellers(城市居民） should be controlled.
B.
City dwellers should be aware of the problem.
C.
The government should limit the number of vehicles in a city.
D.
The Government should be aware of the problem.
查看完整题目与答案
【多选题】关于双抗体夹心法 ELISA,正确的表述是
A.
使用分别针对抗原不同决定基的两种单克隆抗体作酶标记
B.
一种单克隆抗体作为固相抗体,另一种作为酶标抗体
C.
可使标本和酶标抗体同时加入
D.
采用高亲和力的单克隆抗体可提高测定的敏感性和特异性
E.
用于检测二价或二价以上的抗原
查看完整题目与答案
【单选题】According to the writer, when one door closes, _____________________.
A.
another door certainly opens
B.
other opportunities will come to you
C.
another door will not necessarily open
D.
things will change from bad to good
查看完整题目与答案
相关题目：
【单选题】According to the woman, the war memorial is ___________.
A.
easy to find
B.
impossible to notice
C.
a little difficult to see
D.
o
查看完整题目与答案
【单选题】According to the passage, what might be a barrier to marriage in 2050 ?
A.
Age and education.
B.
Influence from the outside world.
C.
Practice of non-marriage.
D.
Financial independence.
查看完整题目与答案
【简答题】输入假说属于 ,不属于第二语言教学理论研究
查看完整题目与答案
【判断题】( ) 3.According to Professor Zog, there is no life on Earth.
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the speaker, why are the humanities important?
A.
They provide us with facts, truth and objectivity.
B.
They provide us with social workers, teachers and artists.
C.
They provide us with many things that we never thought of before.
D.
They provide us with the ability to help others in our local community.
查看完整题目与答案
【单选题】According to family members, Boeing is mainly concerned with:
A.
Profits
B.
Safty
C.
Lawsuits
D.
Compensation
查看完整题目与答案
【判断题】类体中private修饰的变量在本类中能访问，类生成的对象也能访问。
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the conversation, which statement is true?
A.
The number of city dwellers(城市居民） should be controlled.
B.
City dwellers should be aware of the problem.
C.
The government should limit the number of vehicles in a city.
D.
The Government should be aware of the problem.
查看完整题目与答案
【多选题】关于双抗体夹心法 ELISA,正确的表述是
A.
使用分别针对抗原不同决定基的两种单克隆抗体作酶标记
B.
一种单克隆抗体作为固相抗体,另一种作为酶标抗体
C.
可使标本和酶标抗体同时加入
D.
采用高亲和力的单克隆抗体可提高测定的敏感性和特异性
E.
用于检测二价或二价以上的抗原
查看完整题目与答案
【单选题】According to the writer, when one door closes, _____________________.
A.
another door certainly opens
B.
other opportunities will come to you
C.
another door will not necessarily open
D.
things will change from bad to good
查看完整题目与答案
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