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【图片】如图所示，真空中闭合曲面S内包含两个带电量分别为Q1=+5q和Q2=-8q的点电荷，另一带电量为Q3=-8q的点电荷在曲面外，则通过封闭曲面S的电通量为________________【图片】。
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【单选题】已知298.15 K时，φy (I2/I－)=0.535 V，φy (Fe3+/Fe2+) = 0.771 V，则反应2Fe3+ + 2I－=2Fe2+ + I2 的标准平衡常数为 （ ）
A.
9.4×10 7
B.
9.4×10 － 7
C.
9.4×10 10
D.
9.4×10 5
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【单选题】已知下列反应在标准状态下,皆正向自发进行: 则有关 φ y 的大小顺序正确的是( )
A.
Fe 3+ /Fe 2+ ＞ I 2 /I - ＞ Br 2 /Br -
B.
I 2 /I - ＞ Fe 3+ /Fe 2+ ＞ Br 2 /Br -
C.
Br 2 /Br - ＞ I 2 /I - ＞ Fe 3+ /Fe 2+
D.
Br 2 /Br - ＞ Fe 3+ /Fe 2+ ＞ I 2 /I -
查看完整题目与答案
【单选题】CPT条件下,买卖双方风险划分的界限是()
A.
装运港船舷
B.
货交承运人
C.
目的港船上
D.
目的地码头
查看完整题目与答案
【单选题】听力原文：M: Since it's the rush hour, let's take the subway. W: OK. It's not as direct as the bus, but it's faster, and there will be less chance of a traffic jam. Q: Why did the man and woman decide to t...
A.
It's more direct.
B.
There's a traffic jam.
C.
It' s faster.
D.
It' s cheaper.
查看完整题目与答案
【简答题】计算并将相关结果数据填入相应空格,pH=2.0,[Y 4- ]=0.10 mol/L的溶液中Fe 3+ /Fe 2+ 电对的条件电位____V并判断此时Fe 3+ ____[填:能、不能]氧化I - 。 已知:[pH=2,lg α[(H] =13.51, φ θ Fe3+/Fe2+ =0.77V, φ θ I2/I- =0.545V, lgK [FeY-] =25.1, lgK [FeY-] =1...
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【单选题】'Let's go to the museum this afternoon. There's a wonderful exhibition.' 'OK.___________ we meet at the bus stop?'
A.
Will
B.
Shall
C.
Can
D.
Should
查看完整题目与答案
【单选题】听力原文：M: It's a fine day today, isn't it? W: Yes. Let's go to the park, OK? M: That's great! Q: Where do they plan to go? (17)
A.
Park.
B.
Market.
C.
School.
查看完整题目与答案
【单选题】听力原文：W: Since it's the rush hour, let's take the subway. M: Ok. It's not as direct as tile bus, but it's faster and there will be less chance of a traffic: jam. Q: Why do the man and woman decide to t...
A.
It's more direct.
B.
It's faster.
C.
It's less crowded.
D.
It's less expensive.
查看完整题目与答案
【判断题】金山毒霸指对电脑杀毒,不可以对手机进行杀毒()
A.
正确
B.
错误
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【单选题】右脚向前一大步,右腿屈膝半蹲(大腿接近水平),右膝 与脚尖垂直,左腿挺膝伸直,两脚全脚掌着地是( )。
A.
马步
B.
弓步
C.
虚步
D.
仆步
查看完整题目与答案
相关题目：
【单选题】已知298.15 K时，φy (I2/I－)=0.535 V，φy (Fe3+/Fe2+) = 0.771 V，则反应2Fe3+ + 2I－=2Fe2+ + I2 的标准平衡常数为 （ ）
A.
9.4×10 7
B.
9.4×10 － 7
C.
9.4×10 10
D.
9.4×10 5
查看完整题目与答案
【单选题】已知下列反应在标准状态下,皆正向自发进行: 则有关 φ y 的大小顺序正确的是( )
A.
Fe 3+ /Fe 2+ ＞ I 2 /I - ＞ Br 2 /Br -
B.
I 2 /I - ＞ Fe 3+ /Fe 2+ ＞ Br 2 /Br -
C.
Br 2 /Br - ＞ I 2 /I - ＞ Fe 3+ /Fe 2+
D.
Br 2 /Br - ＞ Fe 3+ /Fe 2+ ＞ I 2 /I -
查看完整题目与答案
【单选题】CPT条件下,买卖双方风险划分的界限是()
A.
装运港船舷
B.
货交承运人
C.
目的港船上
D.
目的地码头
查看完整题目与答案
【单选题】听力原文：M: Since it's the rush hour, let's take the subway. W: OK. It's not as direct as the bus, but it's faster, and there will be less chance of a traffic jam. Q: Why did the man and woman decide to t...
A.
It's more direct.
B.
There's a traffic jam.
C.
It' s faster.
D.
It' s cheaper.
查看完整题目与答案
【简答题】计算并将相关结果数据填入相应空格,pH=2.0,[Y 4- ]=0.10 mol/L的溶液中Fe 3+ /Fe 2+ 电对的条件电位____V并判断此时Fe 3+ ____[填:能、不能]氧化I - 。 已知:[pH=2,lg α[(H] =13.51, φ θ Fe3+/Fe2+ =0.77V, φ θ I2/I- =0.545V, lgK [FeY-] =25.1, lgK [FeY-] =1...
查看完整题目与答案
【单选题】'Let's go to the museum this afternoon. There's a wonderful exhibition.' 'OK.___________ we meet at the bus stop?'
A.
Will
B.
Shall
C.
Can
D.
Should
查看完整题目与答案
【单选题】听力原文：M: It's a fine day today, isn't it? W: Yes. Let's go to the park, OK? M: That's great! Q: Where do they plan to go? (17)
A.
Park.
B.
Market.
C.
School.
查看完整题目与答案
【单选题】听力原文：W: Since it's the rush hour, let's take the subway. M: Ok. It's not as direct as tile bus, but it's faster and there will be less chance of a traffic: jam. Q: Why do the man and woman decide to t...
A.
It's more direct.
B.
It's faster.
C.
It's less crowded.
D.
It's less expensive.
查看完整题目与答案
【判断题】金山毒霸指对电脑杀毒,不可以对手机进行杀毒()
A.
正确
B.
错误
查看完整题目与答案
【单选题】右脚向前一大步,右腿屈膝半蹲(大腿接近水平),右膝 与脚尖垂直,左腿挺膝伸直,两脚全脚掌着地是( )。
A.
马步
B.
弓步
C.
虚步
D.
仆步
查看完整题目与答案