皮皮学，免费搜题
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【单选题】
缩醛反应的条件是
A.
浓OH-
B.
稀OH-
C.
干燥HCl
D.
HCl水溶液
E.
水
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【单选题】已知E Ө (Cr 2 O 7 2- /Cr 3+ )>E Ө (Fe 3+ /Fe 2+ )>E Ө (Cu 2+ /Cu)>E Ө (Fe 2+ /Fe),则上述诸电对的各物种中最强的氧化剂和最强的还原剂分别为( )。
A.
Cr 2 O 7 2- ,Fe 2+
B.
Cr 2 O 7 2- ,Fe
C.
Fe 3+ ,Cu
D.
Cu 2+ ,Fe 2+
查看完整题目与答案
【单选题】E Ө (Mn 2+ /Mn)=-1.029 V , E Ө (Cu 2+ /Cu)=0.342 V , E Ө (Ag + /Ag)=0.799 V , 判断氧化剂强弱的顺序是:
A.
Ag + >Mn 2+ >Cu 2+ ；
B.
Cu 2+ >Mn 2+ >Ag + 。
C.
Mn 2+ >Cu 2+ >Ag + ；
D.
Ag + >Cu 2+ >Mn 2+ ；
查看完整题目与答案
【单选题】已知 E Ө (Fe 3+ / Fe 2+ ) =+ 0.77 v , E Ө (Br 2 / Br - ) =+ 1.07 v , E Ө (H 2 O 2 / H 2 O) =+ 1.78 v , E Ө (Cu 2+ / Cu) =+ 0.34 v , E Ө (Sn 4+ / Sn 2+ ) =+ 0.15 v ,则在标准态下能共存的是
A.
Fe 3+ ， Cu
B.
Fe 3+ ， Br 2
C.
Sn 2+ ， Fe 3+
D.
H 2 O 2 ， Fe 2+
查看完整题目与答案
【单选题】Which of the following statements is true? I.If young firms are struggling to obtain funding from underdeveloped financial markets, the most efficient policy solution would be a production subsidy. II...
A.
a. I only
B.
b. I and II
C.
c. II and III
D.
d. II only
查看完整题目与答案
【单选题】计算机网络给我们提供大量有益的信息,也带来许多毫无价值的信息,甚至传播一些有悖于社会道德规范的东西。这启示我们( )
A.
要坚持一分为二的观点
B.
要用不同的方法解决不同的矛盾
C.
何矛盾都是有主有次的
D.
看问题只要看到好的方面
查看完整题目与答案
【简答题】已知: Cu 2+ ———Cu + ——Cu , E Ө (Cu 2+ / Cu )= 0.34V , E Ө (Cu 2+ / Cu+ )=0.158V, 则反应 Cu + Cu 2+ =2Cu + 的 E 为 _________V 。(保留到小数点后第3位)
查看完整题目与答案
【单选题】计算机网络给我们提供大量有益的信息,也带来许多毫无价值的信息,甚至传播一些有悖于社会道德规范的东西。这启示我们( )
A.
要坚持一分为二的观点
B.
要用不同的方法解决不同的矛盾
C.
任何矛盾都是有主有次的
D.
看问题只要看到好的方面
查看完整题目与答案
【单选题】An important advantage of on-the-job training is that it
A.
provides immediate transfer of training
B.
allows employees to learn at their own rate without any pressure to produce
C.
provides for greater group interaction
D.
reduces the costs of supervision
查看完整题目与答案
【单选题】为了及时、正确地计算产品成本,企业应做好的各项基础工作不包括()
A.
选择适当的成本计算方法
B.
材料物资的计量、收发、领退和盘点
C.
做好各项原始记录工作
D.
定额的制定和修订
查看完整题目与答案
【单选题】Consider the following game: Raquel is an employee, he has to choose whether to pursue training that costs £1 to herself or not. Vera is an employer, he has to decide whether to pay a fixed wage of £1...
A.
There are two players in the game, they are Raquel and Vera.
B.
Raquel’s strategies are “Training” and “No Training”, Vera’s strategies are “Fixed wage” and “Revenue sharing”.
C.
If Raquel choose strategy “No Training” and Vera choose strategy “Revenue sharing”, their payoffs are (11, 11)
D.
If Raquel choose strategy “Training” and Vera choose strategy “Fixed wage”, their payoffs are (9, 10)
查看完整题目与答案
相关题目：
【单选题】已知E Ө (Cr 2 O 7 2- /Cr 3+ )>E Ө (Fe 3+ /Fe 2+ )>E Ө (Cu 2+ /Cu)>E Ө (Fe 2+ /Fe),则上述诸电对的各物种中最强的氧化剂和最强的还原剂分别为( )。
A.
Cr 2 O 7 2- ,Fe 2+
B.
Cr 2 O 7 2- ,Fe
C.
Fe 3+ ,Cu
D.
Cu 2+ ,Fe 2+
查看完整题目与答案
【单选题】E Ө (Mn 2+ /Mn)=-1.029 V , E Ө (Cu 2+ /Cu)=0.342 V , E Ө (Ag + /Ag)=0.799 V , 判断氧化剂强弱的顺序是:
A.
Ag + >Mn 2+ >Cu 2+ ；
B.
Cu 2+ >Mn 2+ >Ag + 。
C.
Mn 2+ >Cu 2+ >Ag + ；
D.
Ag + >Cu 2+ >Mn 2+ ；
查看完整题目与答案
【单选题】已知 E Ө (Fe 3+ / Fe 2+ ) =+ 0.77 v , E Ө (Br 2 / Br - ) =+ 1.07 v , E Ө (H 2 O 2 / H 2 O) =+ 1.78 v , E Ө (Cu 2+ / Cu) =+ 0.34 v , E Ө (Sn 4+ / Sn 2+ ) =+ 0.15 v ,则在标准态下能共存的是
A.
Fe 3+ ， Cu
B.
Fe 3+ ， Br 2
C.
Sn 2+ ， Fe 3+
D.
H 2 O 2 ， Fe 2+
查看完整题目与答案
【单选题】Which of the following statements is true? I.If young firms are struggling to obtain funding from underdeveloped financial markets, the most efficient policy solution would be a production subsidy. II...
A.
a. I only
B.
b. I and II
C.
c. II and III
D.
d. II only
查看完整题目与答案
【单选题】计算机网络给我们提供大量有益的信息,也带来许多毫无价值的信息,甚至传播一些有悖于社会道德规范的东西。这启示我们( )
A.
要坚持一分为二的观点
B.
要用不同的方法解决不同的矛盾
C.
何矛盾都是有主有次的
D.
看问题只要看到好的方面
查看完整题目与答案
【简答题】已知: Cu 2+ ———Cu + ——Cu , E Ө (Cu 2+ / Cu )= 0.34V , E Ө (Cu 2+ / Cu+ )=0.158V, 则反应 Cu + Cu 2+ =2Cu + 的 E 为 _________V 。(保留到小数点后第3位)
查看完整题目与答案
【单选题】计算机网络给我们提供大量有益的信息,也带来许多毫无价值的信息,甚至传播一些有悖于社会道德规范的东西。这启示我们( )
A.
要坚持一分为二的观点
B.
要用不同的方法解决不同的矛盾
C.
任何矛盾都是有主有次的
D.
看问题只要看到好的方面
查看完整题目与答案
【单选题】An important advantage of on-the-job training is that it
A.
provides immediate transfer of training
B.
allows employees to learn at their own rate without any pressure to produce
C.
provides for greater group interaction
D.
reduces the costs of supervision
查看完整题目与答案
【单选题】为了及时、正确地计算产品成本,企业应做好的各项基础工作不包括()
A.
选择适当的成本计算方法
B.
材料物资的计量、收发、领退和盘点
C.
做好各项原始记录工作
D.
定额的制定和修订
查看完整题目与答案
【单选题】Consider the following game: Raquel is an employee, he has to choose whether to pursue training that costs £1 to herself or not. Vera is an employer, he has to decide whether to pay a fixed wage of £1...
A.
There are two players in the game, they are Raquel and Vera.
B.
Raquel’s strategies are “Training” and “No Training”, Vera’s strategies are “Fixed wage” and “Revenue sharing”.
C.
If Raquel choose strategy “No Training” and Vera choose strategy “Revenue sharing”, their payoffs are (11, 11)
D.
If Raquel choose strategy “Training” and Vera choose strategy “Fixed wage”, their payoffs are (9, 10)
查看完整题目与答案