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A、B、C三种强电解质，它们在水中电离出的离子如下表所示： 阳离子 Ag + Na + 阴离子 NO 3 - SO 4 2- Cl - 下图所示装置中，甲、乙、丙三个烧杯依次分别盛放足量的A、 B、 C三种溶液，电极均为石墨电极。接通电源，经过一段时间后，测得乙中c电极质量增加了27g。常温下各烧杯中溶液的pH与电解时间（t）的关系如图。据此回答下列问题： （1）M为电源的 极（填“正”或“负”），甲电解质为 （填化学式）。 （2）写出丙烧杯中反应的化学方程式 。 （3）有人设想用图一所示原电池为直流电源完成上述电解。则锌电极相当于直流电源的 （填“M”或“N”）极。 （4）有人设想用图二所示装置做直流电源，不仅可以完成电解也能将气体SO 2 转化 为重要化工原料。该设想中负极的电极反应式为 。
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【简答题】Match each task with its corresponding stage:Meeting management Tasks1.Write the meeting minutes.2.Calculate attendance.3.Inform the participants.4.Follow the listed items on the agenda.5.Check the ne...
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【单选题】Whether water vapor can be seen or not depends on______.
A.
how much water is evaporated
B.
how good your eyes are
C.
in which way water is evaporated
D.
climate or weather
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【单选题】听力原文：M：Hello，Mary. How are things? W：Everything goes well. The meeting will be held in London at 9:00 on the 18th We still have six days. Q：When will the conversation most probably take place? (3)
A.
On the 10th.
B.
On the 8th.
C.
On the 12th.
D.
On the 11th.
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【简答题】Conversation Three (Questions 9-12) • Look at the notes below. • You will hear a woman leaving a message about where to hold a meeting. Message From Emily Parker She has found appropriate venue for th...
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【简答题】11. Joan and Alice will prepare the PowerPoint presentation for the meeting. A. Joan and Alice B. the PowerPoint presentation C. meeting
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【单选题】A.The flight time. B.The new model. C. The after-sales service. D. The meeting schedule.
A.
The flight time.
B.
The new model.
C.
The after-sales service.
D.
The meeting schedule.
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【单选题】The sports meeting has been because of the bad weather. A.put up B. put off C. put out D.put on
A.
put up
B.
put off
C.
put out
D.
put on
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【判断题】幼儿比老年人更容易骨折。
A.
正确
B.
错误
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【单选题】对二维数组 a 进行如下初始化 int a[ ][3]={0 , 1 , 2 , 3 , 4 , 5}; 则 a[1][1] 的值是 ____
A.
0
B.
3
C.
4
D.
1
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【简答题】The office has always been a place to get ahead. Unfortunately, it is also a place where a lot of natural resources start to fall behind. Take a look around next time you're at work. See how many ligh...
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【简答题】Match each task with its corresponding stage:Meeting management Tasks1.Write the meeting minutes.2.Calculate attendance.3.Inform the participants.4.Follow the listed items on the agenda.5.Check the ne...
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【单选题】Whether water vapor can be seen or not depends on______.
A.
how much water is evaporated
B.
how good your eyes are
C.
in which way water is evaporated
D.
climate or weather
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【单选题】听力原文：M：Hello，Mary. How are things? W：Everything goes well. The meeting will be held in London at 9:00 on the 18th We still have six days. Q：When will the conversation most probably take place? (3)
A.
On the 10th.
B.
On the 8th.
C.
On the 12th.
D.
On the 11th.
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【简答题】Conversation Three (Questions 9-12) • Look at the notes below. • You will hear a woman leaving a message about where to hold a meeting. Message From Emily Parker She has found appropriate venue for th...
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【简答题】11. Joan and Alice will prepare the PowerPoint presentation for the meeting. A. Joan and Alice B. the PowerPoint presentation C. meeting
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【单选题】A.The flight time. B.The new model. C. The after-sales service. D. The meeting schedule.
A.
The flight time.
B.
The new model.
C.
The after-sales service.
D.
The meeting schedule.
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【单选题】The sports meeting has been because of the bad weather. A.put up B. put off C. put out D.put on
A.
put up
B.
put off
C.
put out
D.
put on
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【判断题】幼儿比老年人更容易骨折。
A.
正确
B.
错误
查看完整题目与答案
【单选题】对二维数组 a 进行如下初始化 int a[ ][3]={0 , 1 , 2 , 3 , 4 , 5}; 则 a[1][1] 的值是 ____
A.
0
B.
3
C.
4
D.
1
查看完整题目与答案
【简答题】The office has always been a place to get ahead. Unfortunately, it is also a place where a lot of natural resources start to fall behind. Take a look around next time you're at work. See how many ligh...
查看完整题目与答案
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