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【判断题】
有翅亚纲成虫脏节亦有成对的附肢。
A.
正确
B.
错误
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【单选题】已知 25 °C 时, E θ (Fe 3+ | Fe 2+ ) = 0.77 V , E θ (Sn 4+ | Sn 2+ ) =0.15 V 。今有一电池,其电池反应为 2 Fe 3+ + Sn 2+ === Sn 4+ +2 Fe 2+ ,则该电池的标准电动势 E θ (298 K) 为:( )
A.
(A) 1.39 V ；
B.
(B) 0.62 V ；
C.
(C) 0.92 V ；
D.
(D) 1.07 V 。
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【简答题】已知 25 °C 时, E θ (Fe 3+ | Fe 2+ ) = 0.77 V , E θ (Sn 4+ | Sn 2+ ) =0.15 V 。今有一电池,其电池反应为 2 Fe 3+ + Sn 2+ === Sn 4+ +2 Fe 2+ ,则该电池的标准电动势 E θ (298 K) 为:( ) (5.0分)A. 1.39 V B. 0.62 V C. 0.92 V D. 1.07 V
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【简答题】25 °C 时,对电池 Pt |Cl 2 ( p θ ê Cl - ( a =1) || Fe 3+ ( a =1) , Fe 2+ ( a =1) ê Pt : ( 1 )写出电池反应; ( 2 )计算电池反应的 D r G m θ 及 K θ 值; ( 3 )当 Cl - 的活度改变为 a (Cl - ) = 0.1 时, E 值为多少? (已知 E θ (Cl - |Cl 2 |Pt) =1...
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【单选题】You were opposed to______ to go with us to the library, weren't you?
A.
our inviting her
B.
us invite her
C.
that we invite her
D.
we inviting her
查看完整题目与答案
【多选题】以下说法正确的有( )。
A.
中国古代，人们言谈和书写时遇到君父尊亲的名字要设法回避，用别的词语来代替，这就是避讳。
B.
年号是皇帝用以纪年而设置的称号
C.
庙号始于商代，明确称谓于清代
D.
在商代和西周前期，一年只分春秋二时，称 “ 春秋 ” 就是指一年
E.
在中国古代科举制度中，如果某人在乡试会试殿试中均考取第一名，就叫 “ 连中三元 ”
查看完整题目与答案
【单选题】From this passage we can infer that ______.
A.
we'll invite the craftsmen to teach at the college
B.
schools and books are not the only way to knowledge
C.
scientific discoveries are based on personal experience
D.
discoveries and rediscoveries are the most important source of knowledge for a college student
查看完整题目与答案
【单选题】已知25°C时,E θ (Fe 3+ | Fe 2+ ) = 0.77 V,E θ (Sn 4+ | Sn 2+ ) =0.15 V。今有一电池,其电池反应为2 Fe 3+ + Sn 2+ === Sn 4+ +2 Fe 2+ ,则该电池的标准电动势E θ (298 K) 为( )
A.
1.39 V
B.
0.92 V
C.
0.62 V
D.
1.07 V。
查看完整题目与答案
【单选题】______before we leave tomorrow, we should invite all our friends to hold a party to welcome them.
A.
Had they come back
B.
Were they coming back
C.
Were they ti5 come back
D.
Would they come back
查看完整题目与答案
【简答题】We would like to invite you to a p_________ (展示).
查看完整题目与答案
【单选题】From this passage we can infer that ______.
A.
we'll invite the craftsman to teach in the college
B.
schools and books are not the only way to knowledge
C.
scientific discoveries late based on personal experience
D.
discoveries and rediscoveries are the most important source of knowledge for a college student
查看完整题目与答案
相关题目：
【单选题】已知 25 °C 时, E θ (Fe 3+ | Fe 2+ ) = 0.77 V , E θ (Sn 4+ | Sn 2+ ) =0.15 V 。今有一电池,其电池反应为 2 Fe 3+ + Sn 2+ === Sn 4+ +2 Fe 2+ ,则该电池的标准电动势 E θ (298 K) 为:( )
A.
(A) 1.39 V ；
B.
(B) 0.62 V ；
C.
(C) 0.92 V ；
D.
(D) 1.07 V 。
查看完整题目与答案
【简答题】已知 25 °C 时, E θ (Fe 3+ | Fe 2+ ) = 0.77 V , E θ (Sn 4+ | Sn 2+ ) =0.15 V 。今有一电池,其电池反应为 2 Fe 3+ + Sn 2+ === Sn 4+ +2 Fe 2+ ,则该电池的标准电动势 E θ (298 K) 为:( ) (5.0分)A. 1.39 V B. 0.62 V C. 0.92 V D. 1.07 V
查看完整题目与答案
【简答题】25 °C 时,对电池 Pt |Cl 2 ( p θ ê Cl - ( a =1) || Fe 3+ ( a =1) , Fe 2+ ( a =1) ê Pt : ( 1 )写出电池反应; ( 2 )计算电池反应的 D r G m θ 及 K θ 值; ( 3 )当 Cl - 的活度改变为 a (Cl - ) = 0.1 时, E 值为多少? (已知 E θ (Cl - |Cl 2 |Pt) =1...
查看完整题目与答案
【单选题】You were opposed to______ to go with us to the library, weren't you?
A.
our inviting her
B.
us invite her
C.
that we invite her
D.
we inviting her
查看完整题目与答案
【多选题】以下说法正确的有( )。
A.
中国古代，人们言谈和书写时遇到君父尊亲的名字要设法回避，用别的词语来代替，这就是避讳。
B.
年号是皇帝用以纪年而设置的称号
C.
庙号始于商代，明确称谓于清代
D.
在商代和西周前期，一年只分春秋二时，称 “ 春秋 ” 就是指一年
E.
在中国古代科举制度中，如果某人在乡试会试殿试中均考取第一名，就叫 “ 连中三元 ”
查看完整题目与答案
【单选题】From this passage we can infer that ______.
A.
we'll invite the craftsmen to teach at the college
B.
schools and books are not the only way to knowledge
C.
scientific discoveries are based on personal experience
D.
discoveries and rediscoveries are the most important source of knowledge for a college student
查看完整题目与答案
【单选题】已知25°C时,E θ (Fe 3+ | Fe 2+ ) = 0.77 V,E θ (Sn 4+ | Sn 2+ ) =0.15 V。今有一电池,其电池反应为2 Fe 3+ + Sn 2+ === Sn 4+ +2 Fe 2+ ,则该电池的标准电动势E θ (298 K) 为( )
A.
1.39 V
B.
0.92 V
C.
0.62 V
D.
1.07 V。
查看完整题目与答案
【单选题】______before we leave tomorrow, we should invite all our friends to hold a party to welcome them.
A.
Had they come back
B.
Were they coming back
C.
Were they ti5 come back
D.
Would they come back
查看完整题目与答案
【简答题】We would like to invite you to a p_________ (展示).
查看完整题目与答案
【单选题】From this passage we can infer that ______.
A.
we'll invite the craftsman to teach in the college
B.
schools and books are not the only way to knowledge
C.
scientific discoveries late based on personal experience
D.
discoveries and rediscoveries are the most important source of knowledge for a college student
查看完整题目与答案