皮皮学，免费搜题
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【单选题】
某有芳香烃的分子式为C 8 H 10 ，其分子中烷基碳上的氢被氯原子取代所得同分异构体有两种，则该有机物苯环上的氢被氯原子取代的同分异构体的种数为(不考虑立体异构)：
A.
1
B.
2
C.
3
D.
4
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【单选题】已知 Sn(白) Sn(灰) = -2.09 kJ·mol-1 Sn(白) + 2Cl2(g) = SnCl4(l) 1-------(1) Sn(灰) + 2Cl2(g) = SnCl4(l) 2-------(2) Sn(白) + 2Cl2(g) = SnCl4(s) 3-------(3) 则三个反应在相同温度下 的关系是( )。
A.
1> 2> 3
B.
2> 1> 3
C.
3> 2> 1
D.
1> 3> 2
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【单选题】已知 Sn白 ® Sn灰【图片】=-2.09kJ·mol-1Sn白 + 2Cl2 (g) ＝SnCl4 (l) 【图片】(1)-------(1)Sn灰 + 2Cl2 (g) ＝SnCl4 (l)【图片】(2)-------(2)Sn白 + 2Cl2 (g) ＝SnCl4 (s) 【图片】(3)-------(3)则三个反应在相同温度下【图片】的关系是
A.
(1) ＞ (2) ＞ (3)
B.
(2) ＞ (1) ＞ (3)
C.
(3) ＞ (2) ＞ (1)
D.
(1) ＞ (3) ＞ (2)
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【单选题】要在幻灯片中插入表格、图片、艺术字、视频、音频等元素时,应在 项卡中操作。
A.
文件
B.
开始
C.
插入
D.
设计
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【单选题】______ is issued under the provision of International Convention for the Prevention of Pollution from Ships，1973，as modified by the Protocol of 1978 relating thereto.
A.
INTERNATIONAL OIL POLLUTION PREVENTION CERTIFICATE
B.
CARGO SHIP SAFETY CONSTRUCTION CERTIFICATE
C.
CARGO SHIP SAFETY EQUIPMENT CERTIFICATE
D.
CARGO SHIP SAFETY RADIOTELEPHONY CERTIFICATE
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【单选题】已知 Sn( 白 ) Sn( 灰 ) = -2.09 kJ·mol -1 Sn( 白 ) + 2Cl 2 (g) = SnCl 4 (l)  -(1) Sn( 灰 ) + 2Cl 2 (g) = SnCl 4 (l)  -(2) Sn( 白 ) + 2Cl 2 (g) = SnCl 4 (s)  -(3) 则三个反应在相同温度下 的关系是
A.
> >
B.
> >
C.
> >
D.
> >
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【简答题】exchanged expectation receipt purchase devoted to Customer service is the provision of service to customers before, during and after a ________. Customer service is a series of activities designed...
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【单选题】已知Sn(白)【图片】Sn(灰) ΔfHmө= -2.09 KJ/molSn(白) + 2Cl2(g) = SnCl4(l) ΔHmө1Sn(灰) + 2Cl2(g) =SnCl4(l) ΔHmө2Sn(白) + 2Cl2(g) = SnCl4(s) ΔHmө3则三个反应在相同温度下ΔHmө的关系是( )
A.
ΔH m ө 1 > ΔH m ө 2 > ΔH m ө 3
B.
ΔH m ө 2 > ΔH m ө 1 > ΔH m ө 3
C.
ΔH m ө 3 > ΔH m ө 2 > ΔH m ө 1
D.
ΔH m ө 1 > ΔH m ө 3 > ΔH m ө 2
查看完整题目与答案
【简答题】要在幻灯片中插入表格、图片、艺术字、视频、音频等元素时,应在 选项卡中操作。
查看完整题目与答案
【单选题】The provision of information within the business entity is referred to as
A.
financial accounting
B.
management accounting
C.
commercial accounting
D.
public accounting
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【判断题】1. The definition of first aid is the provision of emergency treatment and life support for people suffering injury or illness.
A.
正确
B.
错误
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相关题目：
【单选题】已知 Sn(白) Sn(灰) = -2.09 kJ·mol-1 Sn(白) + 2Cl2(g) = SnCl4(l) 1-------(1) Sn(灰) + 2Cl2(g) = SnCl4(l) 2-------(2) Sn(白) + 2Cl2(g) = SnCl4(s) 3-------(3) 则三个反应在相同温度下 的关系是( )。
A.
1> 2> 3
B.
2> 1> 3
C.
3> 2> 1
D.
1> 3> 2
查看完整题目与答案
【单选题】已知 Sn白 ® Sn灰【图片】=-2.09kJ·mol-1Sn白 + 2Cl2 (g) ＝SnCl4 (l) 【图片】(1)-------(1)Sn灰 + 2Cl2 (g) ＝SnCl4 (l)【图片】(2)-------(2)Sn白 + 2Cl2 (g) ＝SnCl4 (s) 【图片】(3)-------(3)则三个反应在相同温度下【图片】的关系是
A.
(1) ＞ (2) ＞ (3)
B.
(2) ＞ (1) ＞ (3)
C.
(3) ＞ (2) ＞ (1)
D.
(1) ＞ (3) ＞ (2)
查看完整题目与答案
【单选题】要在幻灯片中插入表格、图片、艺术字、视频、音频等元素时,应在 项卡中操作。
A.
文件
B.
开始
C.
插入
D.
设计
查看完整题目与答案
【单选题】______ is issued under the provision of International Convention for the Prevention of Pollution from Ships，1973，as modified by the Protocol of 1978 relating thereto.
A.
INTERNATIONAL OIL POLLUTION PREVENTION CERTIFICATE
B.
CARGO SHIP SAFETY CONSTRUCTION CERTIFICATE
C.
CARGO SHIP SAFETY EQUIPMENT CERTIFICATE
D.
CARGO SHIP SAFETY RADIOTELEPHONY CERTIFICATE
查看完整题目与答案
【单选题】已知 Sn( 白 ) Sn( 灰 ) = -2.09 kJ·mol -1 Sn( 白 ) + 2Cl 2 (g) = SnCl 4 (l)  -(1) Sn( 灰 ) + 2Cl 2 (g) = SnCl 4 (l)  -(2) Sn( 白 ) + 2Cl 2 (g) = SnCl 4 (s)  -(3) 则三个反应在相同温度下 的关系是
A.
> >
B.
> >
C.
> >
D.
> >
查看完整题目与答案
【简答题】exchanged expectation receipt purchase devoted to Customer service is the provision of service to customers before, during and after a ________. Customer service is a series of activities designed...
查看完整题目与答案
【单选题】已知Sn(白)【图片】Sn(灰) ΔfHmө= -2.09 KJ/molSn(白) + 2Cl2(g) = SnCl4(l) ΔHmө1Sn(灰) + 2Cl2(g) =SnCl4(l) ΔHmө2Sn(白) + 2Cl2(g) = SnCl4(s) ΔHmө3则三个反应在相同温度下ΔHmө的关系是( )
A.
ΔH m ө 1 > ΔH m ө 2 > ΔH m ө 3
B.
ΔH m ө 2 > ΔH m ө 1 > ΔH m ө 3
C.
ΔH m ө 3 > ΔH m ө 2 > ΔH m ө 1
D.
ΔH m ө 1 > ΔH m ө 3 > ΔH m ө 2
查看完整题目与答案
【简答题】要在幻灯片中插入表格、图片、艺术字、视频、音频等元素时,应在 选项卡中操作。
查看完整题目与答案
【单选题】The provision of information within the business entity is referred to as
A.
financial accounting
B.
management accounting
C.
commercial accounting
D.
public accounting
查看完整题目与答案
【判断题】1. The definition of first aid is the provision of emergency treatment and life support for people suffering injury or illness.
A.
正确
B.
错误
查看完整题目与答案