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下列各组反应哪几组是可逆反应？为什么？ (1)2H 2 +O 2 2H 2 O与2H 2 O 2H 2 ↑+O 2 ↑ (2)NH 3 +H 2 O====NH 3 ·H 2 O与NH 3 ·H 2 O==== +OH - (3)CaCO 3 (s)====CaCO 3 (aq)与CaCO 3 (aq)====CaCO 3 (s) (4) +OH - ====NH 3 ·H 2 O与NH 3 ·H 2 O==== +OH - (5)2NH 3 3H 2 +N 2 与N 2 +3H 2 2NH 3 (6)SO 2 +H 2 O====H 2 SO 3 与H 2 SO 3 ====SO 2 +H 2 O (7)2SO 2 +O 2 2SO 3 与2SO 3 2SO 2 +O 2 (8)2HI H 2 ↑+I 2 ↑与H 2 +I 2 2HI
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参考答案：
举一反三
【单选题】Another factor in the display of art objects (concerns their continued) (preservation). Because of the sensitivity of some of the materials (used in their creation), it is necessary to control within ...
A.
concerns their continued
B.
preservation
C.
used in their creation
D.
which
查看完整题目与答案
【多选题】You are developing a Web application to display products. Products are displayed on different pages on your Web site. You want to create a user control to manage the display of products. You need a de...
A.
Apply the TemplateContainerAttribute to a property of type ITemplate. Pass the type of the template's naming container as the argument to the attribute.
B.
Apply the TemplateContainerAttribute to the user control's class declaration.
C.
Implement a property of type INamingContainer in the user control's code-behind class.
D.
Implement a property of type ITemplate in the user control's code-behind class.
E.
Define a new class that inherits from the ITemplate interface. Implement the InstantiateIn method of the ITemplate interface.
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【单选题】下列说法中正确的是（）
A.
体操运动员在做单臂大回环，该运动员可以视为质点
B.
当研究一列火车全部通过桥所需的时间时，可以把火车视为质点
C.
研究地球的公转时，可以把地球看成质点
D.
当物体沿直线朝一个方向运动时，位移就是路程
查看完整题目与答案
【单选题】Another factor in the display of art objects (concerns their continued preservation). Because of the sensitivity of some of the materials (used in their creation), it is necessary to control (within n...
A.
concerns their continued preservation
B.
used in their creation
C.
within narrow limits
D.
which
查看完整题目与答案
【单选题】Which of the following can display the beauty of Chinese calligraphy?
A.
The overall layout.
B.
The strength of using brush.
C.
The change of structures.
D.
All of the above.
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【判断题】如果设置外部中断 0 中断,应置中断允许寄存器 IE 的 EA 位和 EX0 位为 1 。
A.
正确
B.
错误
查看完整题目与答案
【判断题】如设置外部中断0,应置中断允许寄存器IE的EA位和ET0为1 。
A.
正确
B.
错误
查看完整题目与答案
【判断题】如设外部中断0中断,应设置中断允许寄存器IE的EA位和EX0位为1.
A.
正确
B.
错误
查看完整题目与答案
【判断题】研究地球公转时,可以把地球当做一个质点
A.
正确
B.
错误
查看完整题目与答案
【单选题】Another factor in the display of art objects (concerns their continued preservation). Because of the sensitivity of some of the materials (used in their creation), it is necessary to control (within n...
A.
concerns their continued preservation
B.
used in their creation
C.
within narrow limits
D.
which
查看完整题目与答案
相关题目：
【单选题】Another factor in the display of art objects (concerns their continued) (preservation). Because of the sensitivity of some of the materials (used in their creation), it is necessary to control within ...
A.
concerns their continued
B.
preservation
C.
used in their creation
D.
which
查看完整题目与答案
【多选题】You are developing a Web application to display products. Products are displayed on different pages on your Web site. You want to create a user control to manage the display of products. You need a de...
A.
Apply the TemplateContainerAttribute to a property of type ITemplate. Pass the type of the template's naming container as the argument to the attribute.
B.
Apply the TemplateContainerAttribute to the user control's class declaration.
C.
Implement a property of type INamingContainer in the user control's code-behind class.
D.
Implement a property of type ITemplate in the user control's code-behind class.
E.
Define a new class that inherits from the ITemplate interface. Implement the InstantiateIn method of the ITemplate interface.
查看完整题目与答案
【单选题】下列说法中正确的是（）
A.
体操运动员在做单臂大回环，该运动员可以视为质点
B.
当研究一列火车全部通过桥所需的时间时，可以把火车视为质点
C.
研究地球的公转时，可以把地球看成质点
D.
当物体沿直线朝一个方向运动时，位移就是路程
查看完整题目与答案
【单选题】Another factor in the display of art objects (concerns their continued preservation). Because of the sensitivity of some of the materials (used in their creation), it is necessary to control (within n...
A.
concerns their continued preservation
B.
used in their creation
C.
within narrow limits
D.
which
查看完整题目与答案
【单选题】Which of the following can display the beauty of Chinese calligraphy?
A.
The overall layout.
B.
The strength of using brush.
C.
The change of structures.
D.
All of the above.
查看完整题目与答案
【判断题】如果设置外部中断 0 中断,应置中断允许寄存器 IE 的 EA 位和 EX0 位为 1 。
A.
正确
B.
错误
查看完整题目与答案
【判断题】如设置外部中断0,应置中断允许寄存器IE的EA位和ET0为1 。
A.
正确
B.
错误
查看完整题目与答案
【判断题】如设外部中断0中断,应设置中断允许寄存器IE的EA位和EX0位为1.
A.
正确
B.
错误
查看完整题目与答案
【判断题】研究地球公转时,可以把地球当做一个质点
A.
正确
B.
错误
查看完整题目与答案
【单选题】Another factor in the display of art objects (concerns their continued preservation). Because of the sensitivity of some of the materials (used in their creation), it is necessary to control (within n...
A.
concerns their continued preservation
B.
used in their creation
C.
within narrow limits
D.
which
查看完整题目与答案
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